Abstract: A relatively heat stable, intense sweetener composition that includes a dipeptide sweetener and a heat stabilizing amount of a sugar acid lactone. The sweetening composition may also include a polyhydric alcohol, preferably fructose. The sweetening composition exhibits a significant sweetness synergism.Mixes for food products which include a sweetening agent comprising a dipeptide sweetener and a heat stabilizing amount of a sugar acid lactone, sometimes in combination with a polyhydric alcohol. These mixes can have reduced or low calories, and low sodium and cholesterol levels.