Grandmother’s cream: the dessert to serve to surprise your guests!

Heat milk and lemon zest until almost boiling.

Whisk egg yolks with cornstarch and sugar.

Pour a little hot milk over the yolks and whisk vigorously. Continue pouring the milk into the yolks and whisking.

Return mixture to saucepan and heat over medium-low heat, whisking, for 10 minutes or until thickened and bubbly.

Let the cream cool slightly, then pour it into the glasses, layering crumbled biscuits.