You can't eat anything that contains sugar. This includes fruit, honey, maple syrup, and agave nectar. You can't eat any grains or starchy vegetables like potatoes or corn. You can't eat any dairy products, including butter, cream, and cheese. You can't eat any legumes like beans or lentils. You can't eat any processed foods. You can't eat any fruit juices or fruit-based drinks. You can't eat any alcohol. You can't eat any bread, pasta, or rice. You can't eat any processed meat. You can't eat any nuts or seeds. You can't eat any processed oils. You can't eat any soy products. You can't eat any fruit. You can't eat any vegetables.