In a bizarre upset, the International Dairy Foods Association claims that vanilla is actually the most popular ice cream flavor in America. Surely that can’t be correct?
— IDFA (@dairyidfa) July 1, 2017
If you read the article, it vanilla wins out over chocolate due to the fact that vanilla is more often used as an ingredient in other desserts. By itself though, I think that chocolate would be the rightful and undisputed champion flavor.