Beat the egg yolk in a mixing bowl until smooth.
In a saucepan, boil sugar and water to 116°C, then slowly pour into the egg yolk while whisking continuously to create a pâte à bombe (sugar-cooked egg foam).
Whip the mixture until fluffy and light.
Soften the cream cheese and gently fold it into the egg foam.
Melt the Dulcey chocolate and bloom the gelatin in cold water, then fold both into the mixture.
Whip 70% of the whipping cream to soft peaks and fold it gently into the mixture to lighten it.
Add the coffee decoction and blend well to incorporate the flavor.
Pour half of the mixture into silicone molds, insert the chocolate crisp and an ice cream stick into each mold.
Add the remaining cheesecake mixture to fill the molds and smooth the tops.
Freeze the molds for at least 4 hours until completely set.
Once frozen, unmold the cheesecakes and dip each into the nutty chocolate coating glaze for a glossy finish.
Store in the freezer until ready to serve.