Peel all apples, then cut one into small cubes, grate another one and juice the third. If you don’t have a juicer, then use cloudy apple juice instead - about 50 ml.
Put all of the other ingredients (except the Calvados) in a heavy-based saucepan and add the cubed and grated apples.
Stir over a low heat until the margarine has melted and the sugars have dissolved.
Simmer for about 10-15 minutes over low heat, stirring frequently.
When the mincemeat is thick and moist, turn off the heat and set aside to cool slightly.
Stir the alcohol, then fill the jars, sealing them immediately with the lids. You should get about 3-4 jars.
Let them cool, then store in a dark, cool place.
Store in the fridge after opening.