Amaretto is an almond-flavored liqueur from Saronno, Italy. Curiously, true amaretto is made from apricot kernels.
Candy-coated almonds, also known as Jordan almonds, are sold in cookware and gourmet shops as well as in candy- and cake- decorating supply stores.
One-fourth cup of water plus 1 teaspoon of almond extract can be used in place of the amaretto in the brownies. Two tablespoons of water plus 1/2 teaspoon almond extract can be used in place of the amaretto in the frosting.