Wash, drain, clean and halve the strawberries. Weigh 1250 g fruit
Mix jam sugar, strawberries and lemon juice well in a large pot. Mash the fruits partially with a potato masher. Bring to the boil while stirring constantly and let it boil effervescently for exactly 3 minutes from the beginning of foaming
Pull the jam off the stove. Stir in the Amaretto. Fill jam brimful into prepared twist-off jars and close. Let cool upside down