Starbucks has introduced Brown Sugar Cream Cold Foam into its cold foam lineup, and of course, we had to try it out right on release day. Here's what we think.

A writer reviews Starbucks' Brown Sugar Cold Foam for free Cold Foam Days, and shares info on the Reserve Roasteries summer menu with an ube espresso martini.

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.