Sub Zero Ice Cream and Yogurt, which achieved acclaim on popular TV show “Shark Tank,” opened at 4521 Kingwood Drive, Ste. 230, Kingwood in April. The liquid nitrogen ice cream chain uses the science of cryogenics to freeze ice cream instantly. Customers choose the cream—what kind of milk the ice cream is made from—and the flavors and ingredients to mix in, such as fruit, candy, nuts or baked goods. Customers can watch as the ice cream is frozen with liquid nitrogen. 281-570-4399. www.subzeroicecream.com