Vanilla Ice Cream Day is observed on July 23, 2017. In North America and Europe the most common use of vanilla flavoring is for ice cream, and many people consider it to be the "default" or "plain" flavour. Sales in ice cream parlors are more variable, as new flavours come and go, but about three times as many people call vanilla their favorite compared to chocolate, the runner-up.
Ice cream may be flavored by artificial or natural vanilla flavoring. Artificial flavorings contain 100% vanillin, the main factor that contributes to natural vanilla extract's flavor. Natural vanilla extract may also contain nearly 200 more compounds in addition to vanillin. If vanillin from natural vanilla is used then the product is called "vanilla flavored ice cream". If the ice cream used artificial vanillin then it is labelled as an "artificially flavored vanilla ice-cream". (With material from: Wikipedia)