For the ice cream, the day before, carve the vanilla pod lengthwise and scrape out the pulp. Separate the eggs. Beat the egg white and 1 pinch of salt until stiff. Whip the cream until stiff as well. Whip egg yolk, 60 g sugar, rum and vanilla pulp until thick and creamy.
Fold in almonds, cream and beaten egg white one after the other. Pour into a box form (approx. 20 cm long; approx. 1.25 l capacity) or bowl. Cover and freeze overnight.
For the blueberry sauce, stir the starch and 3 tbsp. apple juice until smooth. Boil up the rest of the juice and 2 tbsp. sugar. Bind with starch, bring to the boil and simmer briefly. Add frozen berries.
Shape half of the ice cream into 6 balls or cut into pieces (refreeze the remaining ice cream immediately). Roll the ice cream in coconut flakes one after the other. Arrange the ice cream with the hot blueberry sauce and serve immediately.