In a saucepan, simmer the cream and coconut milk with the cardamom and ginger over low heat for 5 minutes. Add the sugar and stir until completely dissolved. Let cool for 2 minutes.
Beat the eggs and egg yolks until frothy, then stir into the warm coconut cream.
Pour the mixture into 4 fireproof bowls and place them in an ovenproof dish.
Pour boiling water into the ovenproof dish so the bowls are halfway submerged. Bake in the preheated oven on a wire rack for 30 minutes until the custard is set and reaches 70 °C (158 °F) at the center.
Remove from the oven, sprinkle with a pinch of ground cardamom, and garnish with exotic fruits or candied ginger slices.