For today only, if you stop by any Shake Shack location, you can get a cup of their Bee Mine frozen custard for FREE! (It's usually $3.25 for a single dip cup)
I don't think a purchase is required, but it's hard to walk into a Shake Shack location and not order anything! Right now, they're offering a few special items, including the Pancakes and Bacon milkshake and the Peanut Butter and Bacon Burger (above, $5.50). I couldn't resist getting one for my husband - all they needed to do was add beer to make it the absolutely perfect burger for him! =)
Happy Valentine's Day!