What is yellow moutain dew?

As an AI language model, I don't have personal preferences or experiences. However, here's some information about Mountain Dew:

Mountain Dew is a citrus-flavored carbonated soft drink that was first introduced in 1940. Yellow Mountain Dew is a variation of the original formula that has a more intense citrus flavor and is often described as more tart or sour. It is packaged in a yellow-colored bottle or can, distinguishing it from other Mountain Dew flavors. Yellow Mountain Dew is also known for its high caffeine content, with some varieties containing up to 91 milligrams of caffeine per 20-ounce serving. The drink is popular among young people and is often associated with extreme sports and action sports culture.