Cold brew is a method of making coffee that involves steeping coarsely ground coffee beans in cold water for an extended period, usually 12 to 24 hours. This process extracts flavors and caffeine without the bitterness often associated with hot brewing methods. The result is a smooth, rich coffee concentrate that can be diluted with water or milk before serving. Unlike traditional coffee, which is brewed with hot water, cold brew is typically served chilled or over ice. It can be enjoyed plain or flavored, making it a popular choice for those seeking a refreshing beverage, especially during warmer months.