Pad Thai is a popular Thai noodle dish that is typically made with rice noodles. The noodles used are thin, flat rice noodles that are stir-fried with eggs, garlic, shallots, and a protein such as chicken, shrimp, or tofu. The dish is flavored with a sweet, sour, and savory sauce that includes ingredients such as fish sauce, oyster sauce, brown sugar, and tamarind paste. Other common ingredients include bean sprouts, garlic chives, scrambled egg, firm tofu, and crushed peanuts. The dish is often served with lime wedges and additional condiments such as red chili pepper, roasted peanuts, and fresh vegetables. Vegetarian versions of Pad Thai can be made by leaving out the egg and substituting the fish sauce for more soy sauce.