Cut all the larger vegetables into 1/4-inch (6-milimeter) strips and keep smaller vegetables like snow peas and bean sprouts whole. The best tofu for the wok is tofu that is vacuum packaged, not the tofu in water. This tofu has naturally formed a skin and will not stick in the wok or pan. It comes naturally white, fried or often coated in a soy sauce or five-spiced glaze. It is usually in the deli section of a well- stocked grocery store and sometimes merchandised next to the cheese and cold cuts. Tofu in water should only be used for wet applications like soups or braises.