diff --git a/src/main/java/gregtech/api/recipe/RecipeMapBackend.java b/src/main/java/gregtech/api/recipe/RecipeMapBackend.java
index 8c23e2bfb9a..1cfa99673a5 100644
--- a/src/main/java/gregtech/api/recipe/RecipeMapBackend.java
+++ b/src/main/java/gregtech/api/recipe/RecipeMapBackend.java
@@ -14,6 +14,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -75,6 +76,22 @@ public class RecipeMapBackend {
      */
     protected final RecipeMapBackendProperties properties;
 
+    /**
+     * Called when a recipe is added.
+     *
+     * @see #watchRecipeAdded(Consumer)
+     */
+    @Nullable
+    protected Consumer<GTRecipe> recipeAddedCallback;
+
+    /**
+     * Called when a {@link GTRecipeBuilder} is added.
+     *
+     * @see #watchRecipeBuilderAdded(Consumer)
+     */
+    @Nullable
+    protected Consumer<GTRecipeBuilder> recipeBuilderAddedCallback;
+
     public RecipeMapBackend(RecipeMapBackendPropertiesBuilder propertiesBuilder) {
         this.properties = propertiesBuilder.build();
         GregTechAPI.itemStackMultiMaps.add(itemIndex);
@@ -137,6 +154,9 @@ public GTRecipe compileRecipe(GTRecipe recipe) {
         }
         recipesByCategory.computeIfAbsent(recipe.getRecipeCategory(), v -> new ArrayList<>())
             .add(recipe);
+        if (recipeAddedCallback != null) {
+            recipeAddedCallback.accept(recipe);
+        }
         for (FluidStack fluid : recipe.mFluidInputs) {
             if (fluid == null) continue;
             fluidIndex.put(
@@ -171,6 +191,9 @@ protected GTRecipe addToItemMap(GTRecipe recipe) {
      * Builds recipe from supplied recipe builder and adds it.
      */
     protected Collection<GTRecipe> doAdd(GTRecipeBuilder builder) {
+        if (recipeBuilderAddedCallback != null) {
+            recipeBuilderAddedCallback.accept(builder);
+        }
         Iterable<? extends GTRecipe> recipes = properties.recipeEmitter.apply(builder);
         Collection<GTRecipe> ret = new ArrayList<>();
         for (GTRecipe recipe : recipes) {
@@ -306,6 +329,26 @@ public boolean containsInput(Fluid fluid) {
         return fluidIndex.containsKey(fluid.getName());
     }
 
+    /**
+     * Calls the given callback when a recipe is added.
+     *
+     * @param callback the callback
+     */
+    public void watchRecipeAdded(Consumer<GTRecipe> callback) {
+        Consumer<GTRecipe> current = this.recipeAddedCallback;
+        this.recipeAddedCallback = current != null ? current.andThen(callback) : callback;
+    }
+
+    /**
+     * Calls the given callback when a {@link GTRecipeBuilder} is added.
+     *
+     * @param callback the callback
+     */
+    public void watchRecipeBuilderAdded(Consumer<GTRecipeBuilder> callback) {
+        Consumer<GTRecipeBuilder> current = this.recipeBuilderAddedCallback;
+        this.recipeBuilderAddedCallback = current != null ? current.andThen(callback) : callback;
+    }
+
     // region find recipe
 
     /**