high altitude baking means: Baking at altitudes above 3,000 feet requires adjustments because of the lower pressure. According to the USDA, baking powder should be reduced by 18 teaspoons at elevations of 3,000 feet. At 5,000 feet it can decrease by 18 tablespoons and 18 teaspoons respectively. At 7,000 feet the USDA recommends a decrease of 1 teaspoon. It may be beneficial to reduce the sugar intake by 1 to 3 teaspoons. Higher altitudes may also make it take longer to melt butter and chocolate in the microwave ovens. Your state’s department of agriculture may have regional guidelines. (in Cooking Dictionary)
