A wok, which has deep tapered sides, is a traditional type pan used for stir-frying. A wok works well but is not a necessity. A nonstick deep skillet also works very well. If rice noodles or mung bean noodles are going to be added to the stir-fry, they are sometimes deep-fried in the wok or deep skillet first and then set aside while other ingredients are stir-fried according to the recipe.