Americans' taste for cold brew transforms summertime coffee market

By Luc Cohen NEW YORK (Reuters) - For U.S. coffee shops, business usually cools down as the weather heats up. Since cold brew often uses more beans than traditional iced coffee, it could boost overall U.S. demand for coffee beans, partially offsetting the effect of the more efficient single-serve pods popularized by Keurig Green Mountain. Peet's Coffee & Tea, one of the nation's biggest coffee chains with about 400 stores, replaced traditional iced coffee with cold brew in June, an