You're dealing with the fat issue. You really have to avoid all fat, veggies, meat and grains. You can only eat food that is clear at room temperature. You can have fruit juices with no pulp. Coffee, tea, honey, jelly (not jam),clear, hard candy. If you cant see through it, you cant have it. And even though alcohol is clear, you cant have that either. You can have pop, though.
It's not much fun, but you just have to do it.