What do they put in vanilla coke to make it taste like vanilla?

The secret to Vanilla Coke's flavor is actually a combination of two things:

* Natural and artificial vanilla flavoring: This is the main ingredient responsible for the distinctive vanilla taste. It's a blend of natural vanilla extract, which comes from vanilla beans, and artificial vanilla flavoring, which is chemically synthesized.

* A hint of cinnamon: This spice is often added to vanilla flavors to enhance the complexity and roundness of the taste.

It's important to note that the exact recipe for Vanilla Coke is a closely guarded secret by Coca-Cola. However, this combination of ingredients gives Vanilla Coke its unique, sweet, and slightly spicy taste.