“USA Today” has crowned Habit Burger’s Double Char the best fast-food burger in America for the second straight year. The Habit says the burger’s signature flavor comes from cooking its patties over an open flame, which is a tradition that dates back to the chain’s first restaurant near Santa Barbara in 1969. Here are the top 10 fast-food burgers in America:1. The Double Char from Habit Burger & Grill2. The Double Meat Whataburger from Whataburger(NY Post)