Elegant Beef Wellington - cooking recipe

Ingredients

1 (6 lb.) whole beef tenderloin roast
1 (17 1/4 oz.) frozen puffed pastry
1 medium size onion, minced
1 (8 oz.) pkg. mushrooms, finely chopped
1/2 tsp. thyme leaves, dried
1/2 tsp. salt and pepper
2 Tbsp. red wine
1/2 lb. liver pate
1 large egg, separated
2 tsp. milk

Preparation

Can use eye of round, not as tender, but still very good.