Cut the salmon into 12 parts and let them steep in olive oil seasoned with lemon pepper and fleur de sel.
Roll out the puff pastry and divide into 12 rectangles. Place a heaped teaspoon of cream cheese cream in the middle of each rectangle and add the salmon. Close the puff pastry like small envelopes. Brush the top with whisked egg yolk and sprinkle with grated cheese.
Bake the middle rack at 170 ° for about 23 minutes.