For the Crema Catalana with apple, first heat the milk and sugar in a saucepan, add the cinnamon sticks, cover with cling film and leave to infuse for 10 minutes.
Mix the whipped cream with the egg yolks in a bowl. Slowly stir the spiced milk into the whipped cream and egg mixture. Pour into ovenproof bowls, place on a rack and let set in the oven at 100 °C convection oven for about 45-60 minutes. Then let cool to room temperature.
In the meantime, wash apples, cut around the casing into 1 cm thick slices, then dice. Marinate with lime juice, zest, powdered sugar and vanilla pulp.
Sprinkle each small bowl with 1 tsp. brown sugar and caramelize with a Bunsen burner.
Arrange apples on top of crema catalana. Pluck mint or lemon balm leaves and sprinkle loosely over the Crema Catalana with apple.