Buy One Shake Shack Milkshake, Get One Free This Summer
by Daniel Oropeza from Lifehacker on (#6BNZ4)
Milkshakes come better in pairs, especially in the summer. And right now, New York-based burger chain Shake Shack is offering a buy one milkshake, get one free deal until July 31 at participating locations. Share with a friend or take both for yourself.