In Turkey, in addition to the internationally familiar offerings, numerous localized variants of the hamburger may be found, such as the Islak Burger (lit. "Wet-Burger"), which a beef slider doused in seasoned tomato sauce and steamed inside a special glass chamber, and has its origins in the Turkish fast food retailer Kizilkayalar. Other variations include lamb-burgers and offal-burgers, which are offered by local fast food businesses and global chains alike, such as McDonald's and Burger King. Most burger shops have also adopted a pizzeria-like approach when it comes to home delivery, and almost all major fast food chains deliver.