Rutabaga be augmented with black pepper. Onions are never used. Regionally, neeps are a common ingredient in soups and stews. In England, swede is boiled together with carrots and served either mashed or pureed with butter and ground pepper. The flavored cooking water is often retained for soup, or as an addition to gravy. Swede is an essential vegetable component of the traditional Welsh lamb broth called cawl and Irish stew as eaten in England. Swede is also a component of the popular condiment Branston Pickle. The swede is also one of the four traditional ingredients of the pasty originating in
Potato potatoes can also be easily cooked in a microwave oven and still retain nearly all of their nutritional value, provided they are covered in ventilated plastic wrap to prevent moisture from escaping; this method produces a meal very similar to a steamed potato, while retaining the appearance of a conventionally baked potato. Potato chunks also commonly appear as a stew ingredient. Potatoes are boiled between 10 and 25 minutes, depending on size and type, to become soft. Potatoes are also used for purposes other than eating by humans, for example: Peruvian cuisine naturally contains the potato as a primary ingredient