They can be served with sauces such as white sauce and brown sauce. They are often served with condiments such as brown sauce or ketchup. Daddies is a brand of ketchup and brown sauce in the United Kingdom. While generally similar to a traditional brown sauce, it is vegetarian. Mushroom sauce can also be prepared as a brown sauce. Most often served with brown sauce or tomato ketchup. Variations include mushroom sauce, onion sauce, and herbed brown sauce. Often some form of sauce, such as mayonnaise, tomato ketchup or brown sauce, is included. Chef and YR Sauce are popular brown sauce brands in Ireland. Ketchup and brown sauce are used on fast-food type dishes. The takoyaki are then eaten with brown sauce, similar to Worcester sauce. Many traditional meat-based lunch dishes are served with boiled or mashed potatoes and brown sauce. Worcestershire sauce and brown sauce, along with ketchup, are distinctive English condiments. The gastrique is generally added to a fond, reduced stock or brown sauce. Also derived from "brown sauce" in Japan tonkatsu sauce has a slight variation in ingredients.