Bratwurst also known as a brat in American English, is a sausage usually composed of veal, pork or beef. Bratwurst is usually grilled or pan fried, and sometimes cooked in broth or beer. How the sausages are served is locally different, but most commonly they are regarded as a snack served with or in a Brötchen (white bread roll made from wheat flour) and eaten with hot German mustard. As a pub dish, it is often accompanied by sauerkraut or potato salad. It is a very popular form of fast food in German-speaking countries, often cooked and sold by street vendors from small stands.