FOR THE PASTERY:
250g plain flour
150g cold Lurpak® butter
2 egg yolk
FOR THE QUICHE FILLING:
25g Lurpak® butter
250g wild mushrooms
4 eggs
300ml double cream
120g blue cheese (can use any such as Stilton, Gorgonzola etc), cut into cubes
50g watercress
23cm tart case
Preheat oven to 200c/180c