In the top of a double boiler, whisk together sugar and egg whites. Cook over simmering water until a candy thermometer registers 140°. Remove from heat, and immediately pour into the bowl of a heavy-duty stand mixer fitted with a whisk attachment. Beat mixture at high speed for 10 minutes or until thick and fluffy. Use immediately.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/salted-caramel-custard-tart-with-toasted-meringue-recipe/