Solar Cookers, Kitchen Helix, Siphons, Tornado, Computer Metrics Madness, Pendulum Coupled, Tomato - Fruit or Vegetable, Cabbage Indicator. SOLAR COOKERS: Christian is going to use the heat of the sun to cook food for breakfast. KITCHEN HELIX: You're looking up inside a kitchen helix, a spiral-like, curved line that forms circles of increasing size around a center. What is this?