The HARIO USA cold brew bottle makes brewing easy. Achieve smooth, low-acid coffee by steeping grounds directly in this filter-in bottle. Its heatproof glass construction and silicone spout ensure durability and a tight seal during brewing. Designed in the style of a wine bottle, this elegant brewer produces approximately 650ml of concentrated cold brew in about eight hours. Simply add grounds and water, refrigerate, and enjoy a refreshing, flavorful beverage.