If you remember New Coke with a shudder, brace yourself: Coca-Cola is once again tweaking one of its recipes, this time that of Coke Zero. The New York Times reports the company on Tuesday said the changes would be made in pursuit of delivering "an even more iconic Coke taste," though a marketing professor at Emory suggested only the "most die-hard Coke Zero Sugar people" will be able to detect a difference. The ingredients themselves won't be changing: carbonated water, caramel color, phosphoric acid, aspartame, caffeine, and potassium benzoate will remain in the mix. The company vaguely explained its alteration "optimizes existing Coca-Cola Zero Sugar flavors and existing ingredients."