Hmm the way Bukkit and Forge treat the word "Material" might be different. In minecraft you assign items an ID. For example, stone's ID is 1 and grass is 2 etc. Since the item is from an outside mod, I need to use the ID.
I'm trying to use the ID for something like this:
GameRegistry.addRecipe(new ItemStack(<item id>, 1), new Object[]{"XXX", "X X", Chatacter.valueOf('X'), <item id>});