Starbucks expanding cold brew nationwide

Starbucks' Cold Brew is coffee steeped using cool water, while traditional iced coffee is made by brewing hot coffee at double-strength and pouring over ice.

Starbucks is expanding its small-batch cold brew iced coffee in participating locations across the U.S. and Canada, the company announced Tuesday.

This cold brew method, which involves steeping ground coffee in cool water for 20 hours, is a slower process than the one the chain has traditionally used to make iced coffee. It results in a smoother, more sweet flavor than the traditional method.

The chain first launched cold brew at the end of March in more than 2,800 of its locations.