Mix pudding powder and 6 tablespoons of liqueur. Bring milk to the boil and stir in the pudding powder. Bring to the boil again and simmer for about 1 minute. Season to taste with 1-2 tbsp. sugar. Pour into four coldly rinsed moulds (each containing approx. 150 ml). Let it cool down and put it in a cool place for at least 3 hours
Caramelize 3 tablespoons of sugar in a pan until light yellow. Stir in nuts until they are covered with caramel. Spread on a piece of oiled aluminium foil and let it cool down
Boil the rest of the caramel in a pan with juice or 5 tablespoons of water. Wash and core the apple and cut into fine slices. Steam covered in caramel stock for 2-3 minutes
Dip the moulds briefly in hot water and turn the flans onto plates. Serve with apple slices and nuts. Decorate with cream and mint. Drizzle the rest of the liqueur over it