Increase Fuel Efficiency of Large Boilers 10x

src/main/java/com/nomiceu/nomilabs/mixin/gregtech/BoilerRecipeLogicMixin.java

@@ -0,0 +1,25 @@
+package com.nomiceu.nomilabs.mixin.gregtech;
+
+import net.minecraft.item.ItemStack;
+import net.minecraft.tileentity.TileEntityFurnace;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+import gregtech.api.capability.impl.BoilerRecipeLogic;
+
+/**
+ * Makes fuels last 10x as long in large boilers, to fix fuel efficiency disparity between it and small boilers.
+ */
+@Mixin(value = BoilerRecipeLogic.class, remap = false)
+public class BoilerRecipeLogicMixin {
+
+    @Redirect(method = "trySearchNewRecipe",
+              at = @At(value = "INVOKE",
+                       target = "Lnet/minecraft/tileentity/TileEntityFurnace;getItemBurnTime(Lnet/minecraft/item/ItemStack;)I",
+                       remap = true))
+    private int increaseFuelBurnTime(ItemStack itemStack) {
+        return TileEntityFurnace.getItemBurnTime(itemStack) * 10;
+    }
+}

src/main/resources/mixins.nomilabs.gregtech.json

@@ -8,6 +8,7 @@
     "AccessibleDecompositionRecipeHandler",
     "AccessibleMaterialInfo",
     "AccessibleModHandler",
+    "BoilerRecipeLogicMixin",
     "FluidStorageKeyAccessor",
     "FluidStorageKeysMixin",
     "GTRecipeInputMixin",