An interesting little claim sprang up in the wake of the introduction of Classic Coke, one having to do with its sweetener. People swore they detected a change in the flavor between Classic Coke and the original. This gave rise to the rumor that the product had been reformulated, dropping cane sugar in favor of high fructose corn syrup. Depending upon whom you listened to, either the demand for the return of original Coca-Cola afforded the company the opportunity to switch from cane sugar to corn syrup or the whole fiasco of taking original Coca-Cola off the shelves and reintroducing it three months later as Classic Coke was all a brilliant scheme to mask the change in sweetener. According to whispered wisdom, the company had hoped to slip the modification past consumers by having it take place during the original beverage's absence from the shelves. People would be so darned glad to have Classic Coke back that they wouldn't notice it didn't taste the same as original Coca-Cola. (Another twist to this rumor had it that New Coke had deliberately been formulated to taste awful in order to facilitate the switch ? this supposedly gave Coca-Cola an excuse for pulling the original formula and then putting it back on the market after a brief absence, making it look all along as if they were simply responding to consumer demands.)
The change in sweetener wasn't anything that diabolical. Corn syrup was cheaper than cane sugar; that's what it came down to. In 1980, five years before the introduction of New Coke, half the cane sugar in Coca-Cola had been replaced with high fructose corn syrup. By six months prior to New Coke's knocking the original Coca-Cola off the shelves, there was no cane sugar in American Coca-Cola. Whether they knew it or not, what consumers were drinking then was 100% sweetened by high fructose corn syrup.