Liquid Nitrogen Is This San Francisco Ice Cream Shop's Coolest Ingredient
Nothing beats smooth, creamy, freshly churned ice cream made from fresh ingredients. Smitten Ice Cream in San Francisco takes it a step further by making ice cream to order with its patented "Brrr" machines, which utilize liquid nitrogen to create its creamy concoctions. Seasonal ingredients are placed into the machine's bowl along with a dairy base and churned…