How To make Tuna Quiche

400 grams puff pastry dough
1 can tuna in water
2 cups leben
2 eggs
1 packet mushroom sauce mix
1/2 cup flour
100 grams Cheddar cheese -- grated
Divide dough in half. Roll out half and line the bottom of a pie pan, Blend rest and pour into the dough. Roll out remaining dough, cover, and crimp edges. Bake 1 hour at 170C.