1 files changed, 18 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/interfaces/IRecipeMutableAccess.java b/src/main/java/gregtech/api/interfaces/IRecipeMutableAccess.java
new file mode 100644
index 0000000000..5c6d931d5a
--- /dev/null
+++ b/src/main/java/gregtech/api/interfaces/IRecipeMutableAccess.java
@@ -0,0 +1,18 @@
+package gregtech.api.interfaces;
+
+import net.minecraft.item.ItemStack;
+
+/**
+ * Mixed-in interface for recipe classes in Forge and Vanilla that allows mutating the input and output items.
+ */
+public interface IRecipeMutableAccess {
+
+    /** @return Gets the current output item of the recipe */
+    ItemStack gt5u$getRecipeOutputItem();
+
+    /** Sets a new output item on the recipe */
+    void gt5u$setRecipeOutputItem(ItemStack newItem);
+
+    /** @return The raw list or array of recipe inputs, the exact type depends on the underlying recipe type. */
+    Object gt5u$getRecipeInputs();
+}