1. Put the puff paste in the mold, shape it, and poke a hole in the bottom with a fork. 2. Place parchment paper and grain (the role of a pressing stone) and bake for 10 minutes in an oven preheated to 180 degrees. 3. Put cream cheese, mascarpone cheese, fresh cream, egg, sugar powder and soft flour in a bowl. 4. Melt and mix with medium hot water, put in a pot and boil over low heat until thickened. 5. Transfer to a bowl, stir and cool. 6. Put (5) on the tart sheet, smooth the top, apply a mixture of egg and milk, and bake in an oven preheated to 150 degrees for 15 to 20 minutes.