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Green Kitchens: Getting Techie
Pressure cookers
are sealed cooking pots that do not permit air or liquids to escape below a certain preset pressure. Because the boiling point of water increases as the pressure inside the cooker increases, a pressure cooker allows the liquid in the pot to rise to a temperature higher than 100 °C (212 °F) before boiling, thus speeding up cooking times considerably, according to Wikipedia.
Solar ovens
are insulated boxes with a transparent lid, allowing the sun’s rays to heat up the inside of the box like a greenhouse. They sometimes also include reflectors that concentrate solar energy, thereby increasing temperature in the oven. Solar ovens are often promoted by humanitarian organizations in areas where deforestation is an issue, but they are gaining in popularity in the developed world as well, where they are garnering a reputation for creating intense, bold flavors that can only come from slow, careful, sun-powered cooking.
Chest freezers
the old-fashioned kind with a horizontal lid, are much more efficient than their vertical counterparts. One of the main reasons for this is that heat rises, and cold air falls, so when you open the door of a regular freezer, the cold air just falls out. Air in the chest freezer, on the other hand, stays put when the door is opened. Freezers can be made even more efficient by being kept in a cool place, such as an outdoor storage room, basement or garage, and they can even be clad with extra insulating material.
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