Prepare your dough and let it rest covered in the fridge for 1 hour.
2 boiled and mashed potatoes with the potato masher. Add them to your dough.
Grease your pan and make 10 crepes.
I used a mold of 20cm with zipper.
Put to soak the mushroom for 2 hours, squeezed and stirred in a pan with oil and garlic.
I mixed one side with béchamel.
Mix in a small saucepan always with a whisk to avoid lumps. 6/7 minutes.