INGREDIENTS
2
lbs filet of beef
3 tbsp
olive oil
1 cup
chestnut mushrooms, include some wild ones if you like
3 1/2 tbsp
butter
1
large sprigs fresh thyme
3 1/2 oz
dry white wine
12
slices prosciutto or 12 slices bacon
1 lb
puff pastry, thawed
1 handful
flour, to dust
2
egg yolks beaten with 1 tsp water