Sub Zero Ice Cream and Yogurt opened at 6606 FM 1488, Ste. 110, Magnolia, in The Market shopping center on Feb. 10. The liquid nitrogen ice cream chain offers made-to-order ice cream in a variety of flavors. The business uses cryogenics to freeze ice cream instantly. Customers choose the cream and the combination of mix-ins, such as fruit, candy, nuts or baked goods—and then watch as the ice cream is frozen with liquid nitrogen. 281-789-7157. www.subzeroicecream.com