Soft-serve ice cream gained prominence in the 1950s after its predecessors—soft-serve vitamins, soft-serve pot roast, and soft-serve TV dinners—failed to catch on. Celebrate a time-tested winner with today’s Groupon: for $5, you get $10 worth of ice cream at Mister Softee. This deal is valid at the Mister Softee ice-cream truck at Socrates Sculpture Park in Long Island City.

Brothers William and James Conway took the first Mister Softee truck for a spin in 1956, laying the foundation for a tasty legacy of soft-serve treats. Summer-weary hands can find cool relief with a mitt-fitting cone of chocolate, vanilla, or swirl, which can be colorfully topped with sprinkles or dipped in chocolate or cherry topping ($2.50–$4.50). The truck also blends cool, creamy drinks, including strawberry and Oreo milkshakes ($4.50) and root-beer floats ($5), and sundaes arrive deliciously topped with butterscotch, crushed cherries, pineapple, and the required permit that allows them to be consumed the other six days of the week. Desserters can enjoy Mister Softee’s sweets amid the artistically inclined confines of Socrates Sculpture Park, where the truck parks its sweet-wielding wheels, or between 36th and 30th Avenues when it's on the move.