A cold brew maker is a specialized device designed to brew coffee using cold or room temperature water over an extended period, typically 12 to 24 hours. This method results in a smooth, less acidic coffee concentrate that can be enjoyed on its own or mixed with milk and sweeteners. These makers come in various styles, including immersion brewers and drip systems. Immersion brewers steep coffee grounds in water, while drip systems allow water to flow over the grounds. Both types are popular among coffee enthusiasts for their ability to produce refreshing beverages without the bitterness often associated with hot brewing methods.