diff --git a/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeControllerTests.java b/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeControllerTests.java
index ffc6a3f..4f5391c 100644
--- a/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeControllerTests.java
+++ b/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeControllerTests.java
@@ -4,14 +4,18 @@ import app.mealsmadeeasy.api.auth.AuthService;
 import app.mealsmadeeasy.api.auth.LoginDetails;
 import app.mealsmadeeasy.api.auth.LoginException;
 import app.mealsmadeeasy.api.recipe.spec.RecipeCreateSpec;
+import app.mealsmadeeasy.api.recipe.spec.RecipeUpdateSpec;
 import app.mealsmadeeasy.api.recipe.star.RecipeStarService;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.user.UserCreateException;
 import app.mealsmadeeasy.api.user.UserService;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
 import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.web.servlet.MockMvc;
 
@@ -40,6 +44,9 @@ public class RecipeControllerTests {
     @Autowired
     private AuthService authService;
 
+    @Autowired
+    private ObjectMapper objectMapper;
+
     private User createTestUser(String username) {
         try {
             return this.userService.createUser(username, username + "@test.com", "test");
@@ -187,6 +194,65 @@ public class RecipeControllerTests {
                 .andExpect(jsonPath("$.content", hasSize(3)));
     }
 
+    private String getUpdateBody() throws JsonProcessingException {
+        final RecipeUpdateSpec spec = new RecipeUpdateSpec();
+        spec.setTitle("Updated Test Recipe");
+        spec.setPreparationTime(15);
+        spec.setCookingTime(30);
+        spec.setTotalTime(45);
+        spec.setRawText("# Hello, Updated World!");
+        spec.setIsPublic(true);
+        return this.objectMapper.writeValueAsString(spec);
+    }
+
+    @Test
+    @DirtiesContext
+    public void updateRecipe() throws Exception {
+        final User owner = this.createTestUser("owner");
+        final Recipe recipe = this.createTestRecipe(owner, false);
+        final String accessToken = this.getAccessToken(owner);
+        final String body = this.getUpdateBody();
+        this.mockMvc.perform(
+                post("/recipes/{username}/{slug}", owner.getUsername(), recipe.getSlug())
+                        .header("Authorization", "Bearer " + accessToken)
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(body)
+        )
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.recipe.id").value(recipe.getId()))
+                .andExpect(jsonPath("$.recipe.title").value("Updated Test Recipe"))
+                .andExpect(jsonPath("$.recipe.preparationTime").value(15))
+                .andExpect(jsonPath("$.recipe.cookingTime").value(30))
+                .andExpect(jsonPath("$.recipe.totalTime").value(45))
+                .andExpect(jsonPath("$.recipe.text").value("<h1>Hello, Updated World!</h1>"))
+                .andExpect(jsonPath("$.recipe.rawText").doesNotExist())
+                .andExpect(jsonPath("$.recipe.owner.id").value(owner.getId()))
+                .andExpect(jsonPath("$.recipe.owner.username").value(owner.getUsername()))
+                .andExpect(jsonPath("$.recipe.starCount").value(0))
+                .andExpect(jsonPath("$.recipe.viewerCount").value(0))
+                .andExpect(jsonPath("$.recipe.isPublic").value(true))
+                .andExpect(jsonPath("$.isStarred").value(false))
+                .andExpect(jsonPath("$.isOwner").value(true));
+    }
+
+    @Test
+    @DirtiesContext
+    public void updateRecipeIncludeRawText() throws Exception {
+        final User owner = this.createTestUser("owner");
+        final Recipe recipe = this.createTestRecipe(owner, false);
+        final String accessToken = this.getAccessToken(owner);
+        final String body = this.getUpdateBody();
+        this.mockMvc.perform(
+                post("/recipes/{username}/{slug}", owner.getUsername(), recipe.getSlug())
+                        .header("Authorization", "Bearer " + accessToken)
+                        .param("includeRawText", "true")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(body)
+        )
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.recipe.rawText").value("# Hello, Updated World!"));
+    }
+
     @Test
     @DirtiesContext
     public void addStarToRecipe() throws Exception {
diff --git a/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeServiceTests.java b/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeServiceTests.java
index 9ec3f9c..0e89140 100644
--- a/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeServiceTests.java
+++ b/src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeServiceTests.java
@@ -1,5 +1,6 @@
 package app.mealsmadeeasy.api.recipe;
 
+import app.mealsmadeeasy.api.image.ImageException;
 import app.mealsmadeeasy.api.recipe.spec.RecipeCreateSpec;
 import app.mealsmadeeasy.api.recipe.spec.RecipeUpdateSpec;
 import app.mealsmadeeasy.api.recipe.star.RecipeStar;
@@ -162,13 +163,18 @@ public class RecipeServiceTests {
 
     @Test
     @DirtiesContext
-    public void getByIdWithStarsOkayWhenPublicRecipeWithViewer() throws RecipeException {
+    public void getByIdWithStarsOkayWhenPublicRecipeWithViewer() throws RecipeException, ImageException {
         final User owner = this.createTestUser("recipeOwner");
         final User viewer = this.createTestUser("viewer");
         final Recipe notYetPublicRecipe = this.createTestRecipe(owner);
-        final RecipeUpdateSpec updateSpec = new RecipeUpdateSpec();
-        updateSpec.setPublic(true);
-        final Recipe publicRecipe = this.recipeService.update(notYetPublicRecipe.getId(), updateSpec, owner);
+        final RecipeUpdateSpec updateSpec = new RecipeUpdateSpec(notYetPublicRecipe);
+        updateSpec.setIsPublic(true);
+        final Recipe publicRecipe = this.recipeService.update(
+                notYetPublicRecipe.getOwner().getUsername(),
+                notYetPublicRecipe.getSlug(),
+                updateSpec,
+                owner
+        );
         assertDoesNotThrow(() -> this.recipeService.getByIdWithStars(publicRecipe.getId(), viewer));
     }
 
@@ -304,7 +310,7 @@ public class RecipeServiceTests {
 
     @Test
     @DirtiesContext
-    public void updateRawText() throws RecipeException {
+    public void updateRawText() throws RecipeException, ImageException {
         final User owner = this.createTestUser("recipeOwner");
         final RecipeCreateSpec createSpec = new RecipeCreateSpec();
         createSpec.setSlug("my-recipe");
@@ -312,9 +318,14 @@ public class RecipeServiceTests {
         createSpec.setRawText("# A Heading");
         Recipe recipe = this.recipeService.create(owner, createSpec);
         final String newRawText = "# A Heading\n## A Subheading";
-        final RecipeUpdateSpec updateSpec = new RecipeUpdateSpec();
+        final RecipeUpdateSpec updateSpec = new RecipeUpdateSpec(recipe);
         updateSpec.setRawText(newRawText);
-        recipe = this.recipeService.update(recipe.getId(), updateSpec, owner);
+        recipe = this.recipeService.update(
+                recipe.getOwner().getUsername(),
+                recipe.getSlug(),
+                updateSpec,
+                owner
+        );
         assertThat(recipe.getRawText(), is(newRawText));
     }
 
@@ -328,7 +339,12 @@ public class RecipeServiceTests {
         updateSpec.setRawText("should fail");
         assertThrows(
                 AccessDeniedException.class,
-                () -> this.recipeService.update(recipe.getId(), updateSpec, notOwner)
+                () -> this.recipeService.update(
+                        recipe.getOwner().getUsername(),
+                        recipe.getSlug(),
+                        updateSpec,
+                        notOwner
+                )
         );
     }
 
diff --git a/src/main/java/app/mealsmadeeasy/api/image/ImageException.java b/src/main/java/app/mealsmadeeasy/api/image/ImageException.java
index 9e0844c..50d754c 100644
--- a/src/main/java/app/mealsmadeeasy/api/image/ImageException.java
+++ b/src/main/java/app/mealsmadeeasy/api/image/ImageException.java
@@ -3,7 +3,10 @@ package app.mealsmadeeasy.api.image;
 public class ImageException extends Exception {
 
     public enum Type {
-        INVALID_ID, IMAGE_NOT_FOUND, UNKNOWN_MIME_TYPE
+        INVALID_ID,
+        INVALID_USERNAME_OR_FILENAME,
+        IMAGE_NOT_FOUND,
+        UNKNOWN_MIME_TYPE
     }
 
     private final Type type;
diff --git a/src/main/java/app/mealsmadeeasy/api/image/ImageService.java b/src/main/java/app/mealsmadeeasy/api/image/ImageService.java
index 3f0b376..a69d422 100644
--- a/src/main/java/app/mealsmadeeasy/api/image/ImageService.java
+++ b/src/main/java/app/mealsmadeeasy/api/image/ImageService.java
@@ -17,6 +17,7 @@ public interface ImageService {
 
     Image getById(long id, @Nullable User viewer) throws ImageException;
     Image getByOwnerAndFilename(User owner, String filename, User viewer) throws ImageException;
+    Image getByUsernameAndFilename(String username, String filename, User viewer) throws ImageException;
 
     InputStream getImageContent(Image image, @Nullable User viewer) throws IOException;
     List<Image> getImagesOwnedBy(User user);
diff --git a/src/main/java/app/mealsmadeeasy/api/image/S3ImageRepository.java b/src/main/java/app/mealsmadeeasy/api/image/S3ImageRepository.java
index e79cd23..5bde6b6 100644
--- a/src/main/java/app/mealsmadeeasy/api/image/S3ImageRepository.java
+++ b/src/main/java/app/mealsmadeeasy/api/image/S3ImageRepository.java
@@ -17,4 +17,7 @@ public interface S3ImageRepository extends JpaRepository<S3ImageEntity, Long> {
     List<S3ImageEntity> findAllByOwner(UserEntity owner);
     Optional<S3ImageEntity> findByOwnerAndUserFilename(UserEntity owner, String filename);
 
+    @Query("SELECT image from Image image WHERE image.owner.username = ?1 AND image.userFilename = ?2")
+    Optional<S3ImageEntity> findByOwnerUsernameAndFilename(String username, String filename);
+
 }
diff --git a/src/main/java/app/mealsmadeeasy/api/image/S3ImageService.java b/src/main/java/app/mealsmadeeasy/api/image/S3ImageService.java
index d1e2a64..33dd05a 100644
--- a/src/main/java/app/mealsmadeeasy/api/image/S3ImageService.java
+++ b/src/main/java/app/mealsmadeeasy/api/image/S3ImageService.java
@@ -139,6 +139,17 @@ public class S3ImageService implements ImageService {
                 ));
     }
 
+    @Override
+    @PostAuthorize("@imageSecurity.isViewableBy(returnObject, #viewer)")
+    public Image getByUsernameAndFilename(String username, String filename, User viewer) throws ImageException {
+        return this.imageRepository.findByOwnerUsernameAndFilename(username, filename).orElseThrow(
+                () -> new ImageException(
+                        ImageException.Type.INVALID_USERNAME_OR_FILENAME,
+                        "No such Image for username " + username + " and filename " + filename
+                )
+        );
+    }
+
     @Override
     @PreAuthorize("@imageSecurity.isViewableBy(#image, #viewer)")
     public InputStream getImageContent(Image image, User viewer) throws IOException {
diff --git a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeController.java b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeController.java
index c011b9c..a36332c 100644
--- a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeController.java
+++ b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeController.java
@@ -1,5 +1,7 @@
 package app.mealsmadeeasy.api.recipe;
 
+import app.mealsmadeeasy.api.image.ImageException;
+import app.mealsmadeeasy.api.recipe.spec.RecipeUpdateSpec;
 import app.mealsmadeeasy.api.recipe.star.RecipeStar;
 import app.mealsmadeeasy.api.recipe.star.RecipeStarService;
 import app.mealsmadeeasy.api.recipe.view.FullRecipeView;
@@ -42,6 +44,14 @@ public class RecipeController {
         ));
     }
 
+    private Map<String, Object> getFullViewWrapper(String username, String slug, FullRecipeView view, @Nullable User viewer) {
+        Map<String, Object> wrapper = new HashMap<>();
+        wrapper.put("recipe", view);
+        wrapper.put("isStarred", this.recipeService.isStarer(username, slug, viewer));
+        wrapper.put("isOwner", this.recipeService.isOwner(username, slug, viewer));
+        return wrapper;
+    }
+
     @GetMapping("/{username}/{slug}")
     public ResponseEntity<Map<String, Object>> getByUsernameAndSlug(
             @PathVariable String username,
@@ -55,11 +65,20 @@ public class RecipeController {
                 includeRawText,
                 viewer
         );
-        final Map<String, Object> body = new HashMap<>();
-        body.put("recipe", view);
-        body.put("isStarred", this.recipeService.isStarer(username, slug, viewer));
-        body.put("isOwner", this.recipeService.isOwner(username, slug, viewer));
-        return ResponseEntity.ok(body);
+        return ResponseEntity.ok(this.getFullViewWrapper(username, slug, view, viewer));
+    }
+
+    @PostMapping("/{username}/{slug}")
+    public ResponseEntity<Map<String, Object>> updateByUsernameAndSlug(
+            @PathVariable String username,
+            @PathVariable String slug,
+            @RequestParam(defaultValue = "false") boolean includeRawText,
+            @RequestBody RecipeUpdateSpec updateSpec,
+            @AuthenticationPrincipal User principal
+    ) throws ImageException, RecipeException {
+        final Recipe updated = this.recipeService.update(username, slug, updateSpec, principal);
+        final FullRecipeView view = this.recipeService.toFullRecipeView(updated, includeRawText, principal);
+        return ResponseEntity.ok(this.getFullViewWrapper(username, slug, view, principal));
     }
 
     @GetMapping
diff --git a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurity.java b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurity.java
index 5960f64..99f43a6 100644
--- a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurity.java
+++ b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurity.java
@@ -6,6 +6,7 @@ import org.jetbrains.annotations.Nullable;
 public interface RecipeSecurity {
     boolean isOwner(Recipe recipe, User user);
     boolean isOwner(long recipeId, User user) throws RecipeException;
+    boolean isOwner(String username, String slug, @Nullable User user) throws RecipeException;
     boolean isViewableBy(Recipe recipe, @Nullable User user) throws RecipeException;
     boolean isViewableBy(String ownerUsername, String slug, @Nullable User user) throws RecipeException;
     boolean isViewableBy(long recipeId, @Nullable User user) throws RecipeException;
diff --git a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurityImpl.java b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurityImpl.java
index de87b84..03af8d1 100644
--- a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurityImpl.java
+++ b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurityImpl.java
@@ -29,6 +29,17 @@ public class RecipeSecurityImpl implements RecipeSecurity {
         return this.isOwner(recipe, user);
     }
 
+    @Override
+    public boolean isOwner(String username, String slug, @Nullable User user) throws RecipeException {
+        final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(username, slug).orElseThrow(
+                () -> new RecipeException(
+                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
+                        "No such Recipe for username " + username + " and slug " + slug
+                )
+        );
+        return this.isOwner(recipe, user);
+    }
+
     @Override
     public boolean isViewableBy(Recipe recipe, @Nullable User user) throws RecipeException {
         if (recipe.isPublic()) {
diff --git a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeService.java b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeService.java
index e7724b0..562a074 100644
--- a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeService.java
+++ b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeService.java
@@ -1,5 +1,6 @@
 package app.mealsmadeeasy.api.recipe;
 
+import app.mealsmadeeasy.api.image.ImageException;
 import app.mealsmadeeasy.api.recipe.spec.RecipeCreateSpec;
 import app.mealsmadeeasy.api.recipe.spec.RecipeUpdateSpec;
 import app.mealsmadeeasy.api.recipe.view.FullRecipeView;
@@ -34,7 +35,8 @@ public interface RecipeService {
     List<Recipe> getRecipesViewableBy(User viewer);
     List<Recipe> getRecipesOwnedBy(User owner);
 
-    Recipe update(long id, RecipeUpdateSpec spec, User modifier) throws RecipeException;
+    Recipe update(String username, String slug, RecipeUpdateSpec spec, User modifier)
+            throws RecipeException, ImageException;
 
     Recipe addViewer(long id, User modifier, User viewer) throws RecipeException;
     Recipe removeViewer(long id, User modifier, User viewer) throws RecipeException;
@@ -42,6 +44,9 @@ public interface RecipeService {
 
     void deleteRecipe(long id, User modifier);
 
+    FullRecipeView toFullRecipeView(Recipe recipe, boolean includeRawText, @Nullable User viewer);
+    RecipeInfoView toRecipeInfoView(Recipe recipe, @Nullable User viewer);
+
     @Contract("_, _, null -> null")
     @Nullable Boolean isStarer(String username, String slug, @Nullable User viewer);
 
diff --git a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeServiceImpl.java b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeServiceImpl.java
index 6a7ce73..eefb6e9 100644
--- a/src/main/java/app/mealsmadeeasy/api/recipe/RecipeServiceImpl.java
+++ b/src/main/java/app/mealsmadeeasy/api/recipe/RecipeServiceImpl.java
@@ -1,6 +1,7 @@
 package app.mealsmadeeasy.api.recipe;
 
 import app.mealsmadeeasy.api.image.Image;
+import app.mealsmadeeasy.api.image.ImageException;
 import app.mealsmadeeasy.api.image.ImageService;
 import app.mealsmadeeasy.api.image.S3ImageEntity;
 import app.mealsmadeeasy.api.image.view.ImageView;
@@ -199,46 +200,37 @@ public class RecipeServiceImpl implements RecipeService {
     }
 
     @Override
-    @PreAuthorize("@recipeSecurity.isOwner(#id, #modifier)")
-    public Recipe update(long id, RecipeUpdateSpec spec, User modifier) throws RecipeException {
-        final RecipeEntity entity = this.findRecipeEntity(id);
-        boolean didModify = false;
-        if (spec.getSlug() != null) {
-            entity.setSlug(spec.getSlug());
-            didModify = true;
+    @PreAuthorize("@recipeSecurity.isOwner(#username, #slug, #modifier)")
+    public Recipe update(String username, String slug, RecipeUpdateSpec spec, User modifier)
+            throws RecipeException, ImageException {
+        final RecipeEntity recipe = this.recipeRepository.findByOwnerUsernameAndSlug(username, slug).orElseThrow(() ->
+                new RecipeException(
+                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
+                        "No such Recipe for username " + username + " and slug: " + slug
+                )
+        );
+
+        recipe.setTitle(spec.getTitle());
+        recipe.setPreparationTime(spec.getPreparationTime());
+        recipe.setCookingTime(spec.getCookingTime());
+        recipe.setTotalTime(spec.getTotalTime());
+        recipe.setRawText(spec.getRawText());
+        recipe.setPublic(spec.getIsPublic());
+
+        final S3ImageEntity mainImage;
+        if (spec.getMainImageUpdateSpec() == null) {
+            mainImage = null;
+        } else {
+            mainImage = (S3ImageEntity) this.imageService.getByUsernameAndFilename(
+                    spec.getMainImageUpdateSpec().getUsername(),
+                    spec.getMainImageUpdateSpec().getFilename(),
+                    modifier
+            );
         }
-        if (spec.getTitle() != null) {
-            entity.setTitle(spec.getTitle());
-            didModify = true;
-        }
-        if (spec.getPreparationTime() != null) {
-            entity.setPreparationTime(spec.getPreparationTime());
-            didModify = true;
-        }
-        if (spec.getCookingTime() != null) {
-            entity.setCookingTime(spec.getCookingTime());
-            didModify = true;
-        }
-        if (spec.getTotalTime() != null) {
-            entity.setTotalTime(spec.getTotalTime());
-            didModify = true;
-        }
-        if (spec.getRawText() != null) {
-            entity.setRawText(spec.getRawText());
-            didModify = true;
-        }
-        if (spec.getPublic() != null) {
-            entity.setPublic(spec.getPublic());
-            didModify = true;
-        }
-        if (spec.getMainImage() != null) {
-            entity.setMainImage((S3ImageEntity) spec.getMainImage());
-            didModify = true;
-        }
-        if (didModify) {
-            entity.setModified(LocalDateTime.now());
-        }
-        return this.recipeRepository.save(entity);
+        recipe.setMainImage(mainImage);
+
+        recipe.setModified(LocalDateTime.now());
+        return this.recipeRepository.save(recipe);
     }
 
     @Override
@@ -277,6 +269,16 @@ public class RecipeServiceImpl implements RecipeService {
         this.recipeRepository.deleteById(id);
     }
 
+    @Override
+    public FullRecipeView toFullRecipeView(Recipe recipe, boolean includeRawText, @Nullable User viewer) {
+        return this.getFullView((RecipeEntity) recipe, includeRawText, viewer);
+    }
+
+    @Override
+    public RecipeInfoView toRecipeInfoView(Recipe recipe, @Nullable User viewer) {
+        return this.getInfoView((RecipeEntity) recipe, viewer);
+    }
+
     @Override
     @PreAuthorize("@recipeSecurity.isViewableBy(#username, #slug, #viewer)")
     @Contract("_, _, null -> null")
diff --git a/src/main/java/app/mealsmadeeasy/api/recipe/spec/RecipeUpdateSpec.java b/src/main/java/app/mealsmadeeasy/api/recipe/spec/RecipeUpdateSpec.java
index 0c9eb44..1bf8293 100644
--- a/src/main/java/app/mealsmadeeasy/api/recipe/spec/RecipeUpdateSpec.java
+++ b/src/main/java/app/mealsmadeeasy/api/recipe/spec/RecipeUpdateSpec.java
@@ -1,25 +1,65 @@
 package app.mealsmadeeasy.api.recipe.spec;
 
 import app.mealsmadeeasy.api.image.Image;
+import app.mealsmadeeasy.api.recipe.Recipe;
 import org.jetbrains.annotations.Nullable;
 
+// For now, we cannot change slug after creation.
+// In the future, we may be able to have redirects from
+// old slugs to new slugs.
 public class RecipeUpdateSpec {
 
-    private @Nullable String slug;
-    private @Nullable String title;
+    public static class MainImageUpdateSpec {
+
+        private String username;
+        private String filename;
+
+        public String getUsername() {
+            return this.username;
+        }
+
+        public void setUsername(String username) {
+            this.username = username;
+        }
+
+        public String getFilename() {
+            return this.filename;
+        }
+
+        public void setFilename(String filename) {
+            this.filename = filename;
+        }
+
+    }
+
+    private String title;
     private @Nullable Integer preparationTime;
     private @Nullable Integer cookingTime;
     private @Nullable Integer totalTime;
-    private @Nullable String rawText;
-    private @Nullable Boolean isPublic;
-    private @Nullable Image mainImage;
+    private String rawText;
+    private boolean isPublic;
+    private @Nullable MainImageUpdateSpec mainImageUpdateSpec;
 
-    public @Nullable String getSlug() {
-        return this.slug;
-    }
+    public RecipeUpdateSpec() {}
 
-    public void setSlug(@Nullable String slug) {
-        this.slug = slug;
+    /**
+     * Convenience constructor for testing purposes.
+     *
+     * @param recipe the Recipe to copy from
+     */
+    public RecipeUpdateSpec(Recipe recipe) {
+        this.title = recipe.getTitle();
+        this.preparationTime = recipe.getPreparationTime();
+        this.cookingTime = recipe.getCookingTime();
+        this.totalTime = recipe.getTotalTime();
+        this.rawText = recipe.getRawText();
+        this.isPublic = recipe.isPublic();
+        final @Nullable Image mainImage = recipe.getMainImage();
+        if (mainImage != null) {
+            this.mainImageUpdateSpec = new MainImageUpdateSpec();
+            this.mainImageUpdateSpec.setUsername(mainImage.getOwner().getUsername());
+            this.mainImageUpdateSpec.setFilename(mainImage.getUserFilename());
+        }
     }
 
     public @Nullable String getTitle() {
@@ -62,20 +102,20 @@ public class RecipeUpdateSpec {
         this.rawText = rawText;
     }
 
-    public @Nullable Boolean getPublic() {
+    public boolean getIsPublic() {
         return this.isPublic;
     }
 
-    public void setPublic(@Nullable Boolean isPublic) {
+    public void setIsPublic(boolean isPublic) {
         this.isPublic = isPublic;
     }
 
-    public @Nullable Image getMainImage() {
-        return this.mainImage;
+    public @Nullable MainImageUpdateSpec getMainImageUpdateSpec() {
+        return this.mainImageUpdateSpec;
     }
 
-    public void setMainImage(@Nullable Image mainImage) {
-        this.mainImage = mainImage;
+    public void setMainImageUpdateSpec(@Nullable MainImageUpdateSpec mainImageUpdateSpec) {
+        this.mainImageUpdateSpec = mainImageUpdateSpec;
     }
 
 }