Cupcake frosting can be sweet or sour, tart or cloying. But the most popular combination in the world of desserts is the traditional combination of sweet cupcakes and sour frosting. The key ingredient in the frosting is always one product - natural freshly squeezed lemon juice.
Step 1
Sift the powdered sugar through a sieve and pour it into a tall glass or deep bowl. Add lemon juice and beat at low speed with a blender or mixer.
