MR BROWN BLACK COLD BREW coffee is a type of iced coffee that is made with coffee beans that are steeped in cold water for an extended period of time, typically 12-24 hours. The result is a smooth, less bitter, and less acidic coffee compared to traditional hot brewed coffee. The 240ML size you mentioned suggests that it might be a canned or bottled beverage, which is convenient for people who want to enjoy cold brew on-the-go.