diff --git a/app/Http/Controllers/FoodController.php b/app/Http/Controllers/FoodController.php
index b55538f..fc9d4bb 100644
--- a/app/Http/Controllers/FoodController.php
+++ b/app/Http/Controllers/FoodController.php
@@ -53,8 +53,15 @@ class FoodController extends Controller
      */
     public function edit(Food $food): View
     {
+        // Convert string tags (from old form data) to a Collection.
+        $food_tags = old('tags', $food->tags->pluck('name'));
+        if (is_string($food_tags)) {
+            $food_tags = new Collection(explode(',', $food_tags));
+        }
+
         return view('foods.edit')
             ->with('food', $food)
+            ->with('food_tags', $food_tags)
             ->with('nutrients', Nutrients::$all)
             ->with('serving_units', new Collection([
                 ['value' => 'tsp', 'label' => 'tsp.'],
diff --git a/app/Http/Controllers/RecipeController.php b/app/Http/Controllers/RecipeController.php
index 37ec01b..4d3fa2d 100644
--- a/app/Http/Controllers/RecipeController.php
+++ b/app/Http/Controllers/RecipeController.php
@@ -125,8 +125,15 @@ class RecipeController extends Controller
             }
         }
 
+        // Convert string tags (from old form data) to a Collection.
+        $recipe_tags = old('tags', $recipe->tags->pluck('name'));
+        if (is_string($recipe_tags)) {
+            $recipe_tags = new Collection(explode(',', $recipe_tags));
+        }
+
         return view('recipes.edit')
             ->with('recipe', $recipe)
+            ->with('recipe_tags', $recipe_tags)
             ->with('ingredients', $ingredients)
             ->with('steps', $steps)
             ->with('ingredients_units', Nutrients::$units);
diff --git a/resources/views/foods/edit.blade.php b/resources/views/foods/edit.blade.php
index 90d86ee..61ea2ec 100644
--- a/resources/views/foods/edit.blade.php
+++ b/resources/views/foods/edit.blade.php
@@ -66,7 +66,8 @@
                                                     type="text"
                                                     name="serving_size"
                                                     size="10"
-                                                    :value="old('serving_size', $old_value)"/>
+                                                    :value="old('serving_size', $old_value)"
+                                                    required/>
                                 </div>
 
                                 <!-- Serving unit -->
@@ -91,7 +92,8 @@
                                                     step="any"
                                                     name="serving_weight"
                                                     size="10"
-                                                    :value="old('serving_weight', $food->serving_weight)"/>
+                                                    :value="old('serving_weight', $food->serving_weight)"
+                                                    required/>
                                 </div>
                             </div>
 
@@ -113,7 +115,7 @@
                             </div>
 
                             <!-- Tags -->
-                            <x-tagger :defaultTags="$food->tags->pluck('name')"/>
+                            <x-tagger :defaultTags="$food_tags"/>
 
                             <!-- Source -->
                             <div class="flex-auto">
diff --git a/resources/views/recipes/edit.blade.php b/resources/views/recipes/edit.blade.php
index 3acb360..5f5b646 100644
--- a/resources/views/recipes/edit.blade.php
+++ b/resources/views/recipes/edit.blade.php
@@ -60,7 +60,7 @@
                             </div>
 
                             <!-- Tags -->
-                            <x-tagger :defaultTags="$recipe->tags->pluck('name')"/>
+                            <x-tagger :defaultTags="$recipe_tags"/>
                         </div>
 
                         <!-- Ingredients -->