Using itemstacks in custom recipe

Hello i am trying to make custom recipes with custom itemstacks that i have created but i can not figure out how is this possible if so how can i do it?

this is what i have tried:

Code:

ItemStack tracerp = new ItemStack(Material.REDSTONE);
        ItemMeta pmeta = tracerp.getItemMeta();
trameta.setDisplayName(ChatColor.RED + "" + ChatColor.BOLD + "Tracer bullet");
        trameta.setLore(Arrays.asList("Used in homing cannon"));
        tbullet.setItemMeta(trameta);
        ShapedRecipe trbullet = new ShapedRecipe(tbullet);
        trbullet.shape("0@0",
                "HGH",
                "HGH");
        trbullet.setIngredient('@', tracerp);

 

@DaanSander I believe that you can only use materials. (Correct me if I'm wrong...)

 

Supposedly if that was even going to work, make sure that you register the recipe.

Code:

Bukkit.getServer().addRecipe(recipe);

But doesn't it give you errors in Eclipse? There's not a single constructor where you can use an ItemStack in .setIngredient()

Code:

setIngredient(char key, Material ingredient)
setIngredient(char key, MaterialData ingredient)
setIngredient(char key, Material ingredient, int raw)