Canton, Mass.-based Dunkin’ Donuts announced that it is expanding its beverage menu by adding cold-brew coffee at participating Dunkin’ Donuts restaurants in the Metro New York and Los Angeles markets. The rich, ultra-smooth, full-bodied cold-brew coffee is handcrafted in Dunkin’ Donuts restaurants in small batches and served every day while supplies last, the company says. The offering soon will become available at participating Dunkin’ Donuts locations throughout the country later this summer, it adds.

Dunkin’ Donuts’ Cold Brew Coffee is prepared by steeping the company’s special blend of coffee in cold water for an extended period of time to extract a uniquely distinctive flavor from the beans, the company says. Cold Brew Coffee’s ultra-smooth and naturally sweet flavor profile lends itself to being enjoyed black, but is customizable based on guest preference, it adds. Dunkin’ Donuts’ Cold Brew Coffee is available in small, medium and large cup sizes.

Dunkin’ Donuts is the No. 1 retailer in the iced coffee category in the United States, according to Port Washington, N.Y.-based market research firm The NPD Group / CREST.

“As the country’s leader in cold coffee, we are constantly exploring new options, inspired by market trends and guest and crew feedback, in order to provide our busy, on-the-go guests with even more options any time of day,” said Chris Fuqua, senior vice president of Dunkin' Donuts Brand Marketing, Global Consumer Insights & Product Innovation, in a statement. “Our new Cold Brew Coffee is made daily in small batches and the longer brewing process extracts the flavors differently than our famous iced coffee, providing our guests a rich, smooth coffee with an inherently sweeter flavor reminiscent of dark chocolate.”

The introduction of Cold Brew Coffee is the latest in a series of extensions to the brand’s coffee offerings, it says. Last fall, Dunkin’ Donuts introduced Macchiato to its line of espresso-based beverages. In May, the brand also added new Heath and Almond Joy iced coffees for a limited time, giving guests the chance to enjoy the flavors of their favorite candy bars in their iced coffee throughout summer.