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Lucky Leprechaun ($3.99) at M Burger (multiple locations).
Available until: March 31
Lettuce Entertain You's burger shops have made a ritual out of featuring a mint milkshake for the month of March, and this year is no different. Like the original McD¿s shake, it has that telltale white/green tie-dye effect of vanilla ice cream mixed with bright green mint syrup¿but it's much less cloying and smoother in texture. I'd be remiss if I didn't mention that the chopped-up Andes mints sprinkled on top remind me of dinners at Olive Garden with my family as a kid. --Lisa Arnett
January 17, 2013