AbstractFurnaceBlockEntityMixin.java

public abstract class AbstractFurnaceBlockEntityMixin extends LockableContainerBlockEntity implements SidedInventory, RecipeUnlocker, RecipeInputProvider, Tickable {
    @Shadow protected @Final RecipeType<? extends AbstractCookingRecipe> recipeType;

    protected AbstractFurnaceBlockEntityMixin(BlockEntityType<?> blockEntityType) {
        super(blockEntityType);
        throw new IllegalStateException("AbstractFurnaceBlockEntityMixin's dummy constructor called! ");
    }

    @Inject(method = "isValid", at = @At("RETURN"), cancellable = true)
    void onIsValidReturn(int slot, ItemStack stack, CallbackInfoReturnable<Boolean> cir) {
        if (cir.getReturnValue() || slot == 0) return;

        if (this.world != null &&
                !this.world.getRecipeManager().getFirstMatch(recipeType, new SimpleInventory(stack), this.world).isPresent())
            cir.setReturnValue(false);
    }
}