Grease a baking dish (1 quart capacity) with butter.
Melt 225 g sugar in a saucepan on 2 or possibly on automatic heat 8 to 9 until golden brown caramel. Add 6 tbsp. hot water and heat until the caramel has dissolved. Pour immediately into the mold and set.
Bring the milk with the scraped vanilla pod and the vanilla pulp to the boil on 3 or automatic heat 12. Mix the eggs, egg yolks and 75 g sugar. Stir in the warm milk, then pour through a sieve. Rinse the oranges, finely grate the peel from 2 fruits and stir into the milk.
Pour the egg milk into the mold. Put a grease pan in the hot stove, fill it with hot water. Cover the pan with a lid and cook the flan.
Setting: 150 to 160 °C , 2, sliding rack v. U.
150 to 160 degrees , convection oven 60 to 65 min
Fillet the oranges. Remove peel from kiwis, cut into wedges. Rinse grapes and pick from stems. Turn the flan out onto a plate and garnish with the fruit.