high-altitude cooking and baking

Simply put, the weight of air on any surface it comes in contact with is called air (or atmospheric ) pressure. There’s less (or lower) air pressure at high altitudes because the blanket of air above is thinner than it would be at sea level. As a result, at sea level water boils at 212°F; at an altitude of 7,500 feet, however, it boils at about 198°F because there’s not as much air pressure to inhibit the boiling action. This also means that because at high altitudes boiling water is 14° cooler than at sea level, foods will take longer to cook because they’re heating at a lower temperature. Lower air pressure also causes boiling water to evaporate more quickly in a high altitude. This decreased air pressure means that adjustments in some ingredients and cooking time and temperature will have to be made for high-altitude baking, as well as some cooking techniques such as candy making, deep-fat frying and canning. In general, no recipe adjustment is necessary for yeast-risen baked goods, although allowing the dough or batter to rise twice before the final pan rising develops a better flavor. For baked goods leavened by baking powder and baking soda.



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