10 Day cleanse featured by Dr. Oz! To cleanse your system, make a big pitcher of Fat Flush Water every morning. The longer it sits, the better it will taste. Drink at least one 8 oz glass 3x/day before each meal for 10 days straight. Ingredients, per 8-ounce serving: water, 1 slice grapefruit, 1 slice tangerine, ½ cucumber sliced, 2 peppermint leaves, ice. Combine in a large pitcher.