Have you had the "Lucky 7" or the "Cookie Collision Shake" at Potbelly? Thrillist has a full list of the secret menu items at the local chain sandwich spot, and there's many more than those two. Go read about them all. [Thrillist]
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Have you had the "Lucky 7" or the "Cookie Collision Shake" at Potbelly? Thrillist has a full list of the secret menu items at the local chain sandwich spot, and there's many more than those two. Go read about them all. [Thrillist]
