Never Fail Meringue
["1 Tbsp. cornstarch", "1/2 c. boiling water", "6 Tbsp. sugar", "pinch of salt", "2 Tbsp. cold water", "3 egg whites", "1 tsp. vanilla"]
["Blend cornstarch and cold water in a saucepan.", "Add boiling water and cook, stirring, until clear and thickened. Let stand until completely cold."]
["cornstarch", "boiling water", "sugar", "salt", "cold water", "egg whites", "vanilla"]