Amaretto Syrup

In a small saucepan with a tight-fitting lid, bring the sugar and water to a rolling boil, stirring constantly. Cover it immediately and remove it from the heat. Cool completely. Transfer the syrup to a measuring cup with a spout and stir in the amaretto. If the syrup has evaporated slightly, add enough water to equal 1 cup/8 fluid ounces of syrup. Cover it tightly to prevent evaporation and se