Pad Thai is a popular Thai dish made with stir-fried rice noodles, which are typically flat and thin. The noodles are usually combined with a protein such as chicken, shrimp, tofu, or other fish or meat, as well as scrambled eggs, peanuts, bean sprouts, and other vegetables. The dish is flavored with a sweet, sour, and savory sauce that typically includes tamarind juice, fish sauce, garlic, shallots, and palm sugar. Some recipes may also include dried shrimp, preserved radish, or red chili pepper. Vegetarian versions may substitute soy sauce for the fish sauce and omit the shrimp entirely.