1. Place the puff pastry on a tray covered with baking paper and put in the oven at 190°C for 15 minutes.
2. Rehydrate the freeze-dried shrimps in cold water.
3. When cool, cut the pastry with a pastry cutter to obtain 8 squares each measuring 6 cm.
4. Spread each square with Pecorino Romano sauce, lay the shrimps on top and place one square on top of another in twos.
5. Garnish with Valerian leaves.