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In page Hamburger:

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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 is 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. Almost all major fast food chains deliver.[citation needed]