2.McDonald's had a "Hula Burger" consisting of a slice of grilled pineapple and cheese, and tested it one day head-to-head with another new item — the Filet-O-Fish, which sold 350 sandwiches to only SIX Hula Burgers.
9.Taco Bell had a "seafood salad" back in 1986, and it contained shrimp, crab, and whitefish in a tortilla bowl.
10.A chocolate Wendy's Frosty is actually part chocolate, part vanilla, as Wendy's founder Dave Thomas worried that a full chocolate flavor might take over the taste when paired with other food instead of complementing it.
12.Carl's Jr. had a sibling Mexican restaurant called Taco de Carlos that did not take off — all 17 locations were sold off in the '80s.
13.When a new Chick-fil-A restaurant opens, the first 100 customers are given free meals for a year (one a week, 52 total), consisting of a chicken sandwich, medium waffle potato fries, and a medium drink.
15.There's one McDonald's that has a turquoise arch instead of the traditional yellow, and it's in Sedona, Arizona, because city officials thought the classic gold would clash with the surrounding desert's natural red rocks.
26.Burger King once tried a slightly more upscale dinner situation called Burger King Table Service. It featured BK Dinner Baskets (chicken, steak, sandwich, or Whopper) between the hours of 4 and 8 p.m., which came with side options of fries or a baked potato and coleslaw or a side salad, along with a basket of popcorn while you waited for your meal.
27.White Castle is the first fast-foodchain in the United States, opening in 1921 in Wichita, Kansas.
28.And finally, there's something called the "fajita effect" at Chili's, during which cooks will began prepping for multiple fajita orders after the first fajita order because the smell and sizzling prompts more people to request it.