Kool-Aid is a brand of flavored drink mix that is popular in the United States. The drink mix is typically added to water and sugar to create a sweet, fruity beverage that comes in a variety of flavors, such as cherry, grape, and tropical punch.

Kool-Aid was first introduced in 1927 and has since become a cultural icon in the United States. It is often associated with childhood memories of hot summer days and backyard barbecues, and has been mentioned in popular culture in various forms, including commercials, TV shows, and movies.

In addition to its popularity as a drink mix, "Kool-Aid" has also become a common idiom in American English, often used to describe someone who blindly follows a particular belief or ideology without questioning it. The term "drinking the Kool-Aid" originated from a tragic event in 1978, in which a cult leader convinced his followers to drink a poisoned Kool-Aid beverage, resulting in over 900 deaths.

Overall, Kool-Aid is a popular brand of flavored drink mix in the United States, often associated with childhood memories and summertime fun. However, the term "drinking the Kool-Aid" is also used as a metaphor for blindly following a particular belief or ideology without questioning it.