Prepare the cream: put milk, sugar and semolina in a saucepan and cook over medium heat, stirring with an egg yolk. Once the mixture is homogenized and begins to clot, remove from heat and add the butter and the egg. Stir very well and quickly so that the egg does not boil. Add the lemon zest at the end.
Place the crust sheet in a buttered oven pan, sprinkle with powdered sugar, drizzle with melted butter, place the second sheet on top, and repeat the sprinkling process. Place a second pan or wire rack on top so that the heavy utensil will prevent the leaves to swell. In another pan, follow the same procedure as on the other two sheets.
Bake them in a preheated oven at 120 ° C on heating resistances until the leaves are caramelized (about 15 minutes, depending on the oven). Let them cool and break into irregular pieces.
Boil water and sugar in pots until smooth. Let the syrup cool.
Distribute the cream into glasses. put chopped leaves on top and pour 1 tbsp. syrup.
TIP
It will be especially effective if, during serving, sprinkle the dessert with syrup, which you will pour into a vaporizer.