Mix flour, fat, 75 g sugar, egg, lemon peel and salt to a smooth dough. Wrap in cling film and chill for about 30 minutes. Grease 8 cake tins (10 cm Ø) and sprinkle with breadcrumbs.
Roll out the dough, cut out 8 circles (12 cm Ø) and line the moulds with them. Prick the bottom of the pastry several times with a fork. Bake in the preheated oven (electric: 200 °C/ gas: level 3) for 12-15 minutes.
Remove the tartlets, let them cool down a little and turn them over. Let the tartlets cool down. Stir 4 tablespoons of milk, remaining sugar and pudding powder until smooth. Boil up the rest of the milk. Add pudding powder and bring to the boil while stirring.
Remove the pudding from the heat. Stir in advocaat. Let the custard cool down a little, stirring from time to time. In the meantime, drain the mandarins. Peel and slice the kiwi.
Wash, clean and slice the strawberries. Fill the pudding still warm into the tartlets, cover with fruit and let it set. Whip the cream until stiff, fill into a piping bag with a star-shaped spout.
Spray one cream tuff on each of the tartlets. Sprinkle with brittle if desired.