Drizzling Confectioner's Sugar

A reader has asked: Every time I try to make a confectioners’ sugar icing to drizzle on a cake, it turns out too runny. What am I doing wrong?

A: A runny icing may be corrected by adding a little more sifted confectioners’ sugar to thicken it up. Also, if you are heating the icing before drizzling it, make sure not to heat it beyond about 100˚F or it may become too thin.