Prehaet oven to 350°F Beat egg whites ( at room temp) and cream of tartar at high speed with an electric mixer 1 minute. Gradually add sugar, 1 tablespoon at a time, beating until stiff peaks form and sugar dissolves ( about 2-4 minutes).Stir in remaining ingredients.
Drop by teaspoons onto cookie sheets lined with aluminum foil. Place in oven, and immediately turn off heat. DO NOT OPEN OVEN DOOR FOR AT LEAST 8 HOURS. Carefully peel cookies from foil.