Why is use of aspartame limited to cold foods?
Aspartame is non-saccharide sweetener which is used as sugar substitute. Its use is limited to cold drinks and food to keep its consumption on the lower side and within range to avoid its harmful effect. Aspartame breaks down to give one of its products as phenylalanine which is harmful. Aspartame becomes unstable at cooking temperature. This is the reason why its use is limited to cold foods and drinks.