FREE COLD FOAM: Cold Foam Days at Starbucks take place from May 7 through May 11. Rewards members in the U.S. or Canada can add cold foam to a cold beverage for free.

Starbucks Rewards members are getting a perk with the coffee giants Cold Foam Days which will run from Wednesday to Sunday. Rewards members can redeem the free add-on by applying the coupon in the Starbucks app or by requesting it in-store at participating locations. (Photo by Smith Collection/Gado/Getty Images) Smith Collection/Gado/Getty Images

Starbucks cold foam fans are in for a frothy treat. The coffee chain is letting rewards members add cold foam to its cold drinks for free from Wednesday, May 7, through Sunday, May 11. And the brand’s Cold Foam Days celebration doesn’t end there. It’s also introducing a fresh flavor of the popular add-on.