1 Wash and dry the orange, remove the zest. Place it in a saucepan with the milk and cream. Bring to the boil and leave to cool. Preheat the oven to 165 °C (gas mark 5/6).
2 In a bowl, beat the egg yolks with the caster sugar until the mixture whitens. Then, pour in the cream/milk/zest mixture, in a thin stream, while whisking. Strain the cream
3 Crumble the biscuits, spread them in ramekins (or in small baking dishes). Pour the cream over them.
4 Place the creams on the baking sheet covered with a baking sheet (or drip pan). Bake for about 30 minutes, the cream should be set. Leave to cool.
5 Just before serving, sprinkle the brown sugar creams and caramelize them under the broiler. You can decorate them with fruit skewers...