public class CookingRecipeExample implements ModInitializer {
    [...]
    public static final RecipeSerializer<TestRecipe> TEST_RECIPE_SERIALIZER;
    
    static {
        [...]
        TEST_RECIPE_SERIALIZER = Registry.register(Registry.RECIPE_SERIALIZER, new Identifier(MODID, "test_furnace"), new CookingRecipeSerializer<>(TestRecipe::new, 200));
    }
}