High Altitude Meringue for Pie

Step 1
In a glass or ceramic bowl, stir together cornstarch, sugar, and salt. Mix in water. Heat in the microwave until mixture is thick and clear, about 2 minutes at full power. Set aside to cool slightly.

Step 2
Beat egg whites in a large glass or metal bowl until foamy. Gradually pour in sugar mixture while continuing to whip egg whites until thick and stiff, enough to hold a peak. Cover pie filling completely with meringue, sealing to the edges. Bake as directed in the recipe, or in a preheated 450 degrees F (220 degrees C) oven until golden brown, 7 to 8 minutes.