MINCED BEEF WELLINGTON
1 whole Medium Onion
1 whole Carrot
1 stalk Celery
1 whole Medium Sized Potato
4 sprigs Fresh Rosemary
2 Tablespoons Olive Oil
2 cloves Garlic, Minced
1 pound Good Quality Minced Beef
1 teaspoon Salt And Pepper, Each
1 whole Large Egg
1 pound Puff Pastry