I'm an even bigger idiot

public class Item_Eater extends Item {
    ItemStack SelfStack = new ItemStack(this);

    public void onUpdate(ItemStack stack, World world, Entity entity, int metadata, boolean bool)
    {
            if (SelfStack.getTagCompound() == null)
            {
                SelfStack.setTagCompound(new NBTTagCompound());
            }
            SelfStack.getTagCompound().setInteger("ConsumedAmount", 0);
    }


    @Override
    public ActionResult<ItemStack> onItemRightClick(World worldIn, EntityPlayer playerIn, EnumHand handIn)
    {
        if(playerIn.inventory.hasItemStack(SelfStack))
        {
            int invSize = playerIn.inventory.getSizeInventory();
            for(int i=0; i<invSize; i++)
            {
                int ConsumedAmountNBT = (SelfStack.getTagCompound().getInteger("ConsumedAmount"));

                if(playerIn.inventory.getStackInSlot(i).getItem() == Items.IRON_INGOT)
                {
                    ItemStack IronIngotFound = playerIn.inventory.getStackInSlot(i);

                    IronIngotFound.setCount(IronIngotFound.getCount()-1);

                    SelfStack.getTagCompound().setInteger("ConsumedAmount", (ConsumedAmountNBT)+1);
                    break;
                }

            }
        }
        return super.onItemRightClick(worldIn, playerIn, handIn);
    }

    @Override
    public void addInformation(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, List par3List, boolean par4)
    {
        int ConsumedAmountNBT = (SelfStack.getTagCompound().getInteger("ConsumedAmount"));

        par3List.add("\u00A77Hold right click to consume \u00A7fIron Ingots\u00A77.");
        par3List.add("");
        par3List.add("\u00A7eAmount consumed: \u00A76" + Integer.toString(ConsumedAmountNBT));
    }