New Coke
On April 23, 1985, Coca-Cola, amid much publicity, attempted to change the formula of the drink with "New Coke". Follow-up taste tests revealed most consumers preferred the taste of New Coke to both Coke and Pepsi but Coca-Cola management was unprepared for the public's nostalgia for the old drink, leading to a backlash. The company gave in to protests and returned to a variation of the old formula using high fructose corn syrup instead of cane sugar as the main sweetener, under the name Coca-Cola Classic, on July 10, 1985.