Preheat the oven (electric cooker: 125 °C/circulating air: 100 °C/gas: level 1). Mix cream, milk, 75 g sugar, vanilla sugar, eggs and egg yolks with a whisk.
Place four flat ovenproof baking dishes on the fat pan of the oven. Pour egg cream into the moulds, place them in the hot oven and pour on boiling water until 2/3 of the moulds are in water.
Leave to falter for about an hour. Then take out, let it cool down and put it in a cool place for at least 6 hours.
Wash the orange with hot water and peel or grate some of the peel. Squeeze the orange. Drain the cherries and collect the juice. Stir 2 tbsp. juice and starch until smooth. Boil up the rest of the juice, 1-2 tbsp. sugar, orange juice and zest.
Stir in the mixed starch and simmer for about 2 minutes. Fold in the cherries.
Before serving, sprinkle each cream with 1 teaspoon of sugar. Caramelise with a kitchen gas burner or under the hot oven grill. Serve with the hot cherries.