diff --git a/cf-lib/data/Item.lua b/cf-lib/data/Item.lua
index e7cc877..1cfffcf 100644
--- a/cf-lib/data/Item.lua
+++ b/cf-lib/data/Item.lua
@@ -42,6 +42,14 @@ function Item:assign(data)
     return self
 end
 
+--- Deeply merges data with the item
+--- Shorthand for table.merge(item.prototype, data)
+--- @param data table The data to merge
+function Item:merge(data)
+    table.merge(self.prototype, data)
+    return self
+end
+
 --- Sets the weight of the item calculated from given count per rocket.
 --- @param count number The amount of items that fit into a rocket
 function Item:itemsPerRocket(count)
diff --git a/cf-lib/data/Recipe.lua b/cf-lib/data/Recipe.lua
index 6ca5192..6eca2b6 100644
--- a/cf-lib/data/Recipe.lua
+++ b/cf-lib/data/Recipe.lua
@@ -42,6 +42,14 @@ function Recipe:assign(data)
     return self
 end
 
+--- Deeply merges data with the recipe
+--- Shorthand for table.merge(recipe.prototype, data)
+--- @param data table The data to merge
+function Recipe:merge(data)
+    table.merge(self.prototype, data)
+    return self
+end
+
 --- Adds an ingredient to the recipe
 --- @param ingredientName string The name of the ingredient
 --- @param amount number The amount of the ingredient (default: 1)
@@ -62,7 +70,7 @@ function Recipe:addIngredient(ingredientName, amount)
             ingredient.amount_min = nil
             ingredient.amount_max = nil
             ingredient.probability = nil
-            return
+            return self
         end
     end
     table.insert(self.prototype.ingredients, { name = ingredientName, amount = amount, type = ingredientType })
diff --git a/cf-lib/data/Technology.lua b/cf-lib/data/Technology.lua
index bf950c8..13a1dd9 100644
--- a/cf-lib/data/Technology.lua
+++ b/cf-lib/data/Technology.lua
@@ -50,6 +50,14 @@ function Technology:assign(data)
     return self
 end
 
+--- Deeply merges data with the technology
+--- Shorthand for table.merge(technology.prototype, data)
+--- @param data table The data to merge
+function Technology:merge(data)
+    table.merge(self.prototype, data)
+    return self
+end
+
 --- Sets the prerequisite for the technology
 --- @param prerequisites table The names of the prerequisites
 function Technology:setPrerequisites(prerequisites)