"An Amaretto flavored custard filling goes wonderfully well with chocolate cakes."
Combine sugar, cornstarch, and salt in saucepan. In a separate bowl beat eggs and mix together with milk. Stir into dry mixture. Cook over medium heat, stirring constantly, until thick and bubbling. Cook for 2 minutes more. Remove from heat, add almond liqueur and stir well. Cover surface of filling with plastic wrap to prevent film from forming and chill completely before using.