diff --git a/PaintRecipe.cs b/PaintRecipe.cs
--- a/PaintRecipe.cs
+++ b/PaintRecipe.cs
@@ -58,6 +58,21 @@ namespace DesertPaintLab
         {
         }
 
+        public PaintRecipe(PaintRecipe other)
+        {
+            this.dirty = true;
+            this.reactions = other.reactions;
+            foreach (string reagentName in other.reagents)
+            {
+                this.reagents.Add(reagentName);
+            }
+            foreach (RecipeIngredient copyIngredient in other.recipe)
+            {
+                RecipeIngredient ingredient = new RecipeIngredient(copyIngredient.name, copyIngredient.quantity);
+                this.recipe.Add(ingredient);
+            }
+        }
+
         public List<RecipeIngredient> Ingredients
         {
             get {
diff --git a/RecipeGeneratorWindow.cs b/RecipeGeneratorWindow.cs
--- a/RecipeGeneratorWindow.cs
+++ b/RecipeGeneratorWindow.cs
@@ -200,6 +200,7 @@ namespace DesertPaintLab
 
         protected void OnNewRecipe(object sender, NewRecipeEventArgs args)
         {
+            PaintRecipe recipe = new PaintRecipe(args.Recipe); // copy it
             Gtk.Application.Invoke(delegate
             {
                 progressBar.Pulse();
@@ -226,7 +227,7 @@ namespace DesertPaintLab
                     colorStore.AppendValues(args.Color); // , missingReactionLabel);
                     countLabel.Text = String.Format("{0} / {1}", generator.Recipes.Count, Palette.Count);
                 }
-                profile.SetRecipe(args.Recipe);
+                profile.SetRecipe(recipe);
             });
         }