Combine raisins, sultanas, currants, mixed peel, suet, diced apples, lemon juice and zest, orange juice and zest, and Demerara sugar in a bowl.
Add mixed spice, cinnamon, and ground ginger.
Mix well.
Transfer to an ovenproof dish.
Bake for 3 hours at 110c fan.
To sterilise jars: 20 mins at 160c.
Stir in brandy and vanilla paste once cooled slightly.
Spoon into sterilised jars.
