Preparation Whisk sugar and cornstarch in small saucepan to blend. Add 1 cup water and stir over medium heat until mixture boils and thickens. Remove from heat. Add butter and stir until melted. Whisk in lemon juice and lime juice. Cool sauce to room temperature. Stir in lemon and lime slices and vanilla extract. Add food coloring, if desired. Per 1-tablespoon serving: calories, 15; total fat, 0.5 g; saturated fat, 0.5 g; cholesterol, 1 mg. Nutritional analysis provided by Bon Appétit
Preparation Whisk sugar and cornstarch in small saucepan to blend. Add 1 cup water and stir over medium heat until mixture boils and thickens. Remove from heat. Add butter and stir until melted. Whisk in lemon juice and lime juice. Cool sauce to room temperature. Stir in lemon and lime slices and vanilla extract. Add food coloring, if desired. Per 1-tablespoon serving: calories, 15; total fat, 0.5 g; saturated fat, 0.5 g; cholesterol, 1 mg. Nutritional analysis provided by Bon Appétit