How It's Made S8 · EP7
CO2 Cartridges, Pretzels, Scissor Lifts, Skating Rinks
7.7 · 2001 · Documentary · ~21m
Small steel cylinders are formed, tested and filled with compressed carbon dioxide, shaped dough is boiled and baked into pretzels, hydraulic systems and crossed supports are assembled into scissor lifts, and layered refrigeration systems create and maintain artificial skating-rink ice.
