usa food

  A  hamburger , or simply a  burger , is a  dish  consisting of fillings—usually a  patty  of ground meat, typically  beef —placed inside a sliced  bun  or  bread roll .  The patties are often served with cheese, lettuce, tomato, onion, pickles, bacon, or chilis with  condiments  such as ketchup, mustard, mayonnaise,   relish  or a "special sauce", often a variation of  Thousand Island dressing ,  and are frequently placed on  sesame seed buns . A hamburger patty topped with cheese is called a  cheeseburger . [ 1 ]  Under some definitions, and in some cultures, a burger is considered a  sandwich .