Some versions are prepared using hoisin sauce. The key ingredient of hoisin sauce is fermented soybean paste. Fish sauce, oyster sauce, soy sauce, sriracha sauce, and hoisin sauce are also used prevalently. Sometimes pickled radish is also inside, and other sauces (like hoisin sauce) can be used. Stinky tofu in Hong Kong is typically served deep-fried and eaten with Hoisin sauce. Traditionally, hoisin sauce is made using toasted mashed soybeans. A typical hoisin dipping sauce includes chili, hoisin sauce, peanut butter and sugar. In Cantonese cuisine, hoisin sauce is used to make the sauce. Examples include duck breast and hoisin sauce pizza and barbecue chicken pizza. It is served with chili sauce and/or hoisin sauce on the side as condiments. Hoisin sauce can be used as a marinade sauce for meat such as barbecued pork. Although regional variants exist, hoisin sauce usually includes soybeans, fennel, red chili peppers, and garlic.