If you’ve ever had cold brew coffee, you’re probably aware of how smooth and mellow it is, especially compared to hot brewed coffee. There’s some science behind that difference: when coffee grounds are mixed with hot water, they tend to release the coffee’s tannins, the chemicals that give coffee its natural, bitter edge (they’re also what gives red wine its “dry” flavor). With cold water, however, the tannins typically stay in the grounds, leaving a smoother, easier-drinking beverage. The same principle applies to tea: the colder and longer the steeping time, the mellower and rounder-flavored the tea. Need proof? Look no further than Trader Joe’s Raspberry & Black Currant Organic Cold Brew Black Tea. Made especially for us by an expert tea supplier in Thailand, this Organic Cold Brew Black Tea is sweetened with a bit of cane sugar and flavored with bright, tangy raspberry and rich, earthy black currant. Every sip is mild, sweet, and delectably fruity.