I’ve never seen something like this before! Our entire family loved it. Gonna make it again next week

Ingredients:

2 pounds beef stew meat, cut into bite-sized pieces
1 frozen puff pastry sheet, thawed
1 onion, finely chopped
1 rib of celery, finely diced
2 cups beef stock
1/2 cup flour
2 tablespoons oil
3 sprigs fresh thyme
2 bay leaves
1 teaspoon dried oregano
3 garlic cloves, minced
1 egg white
1 teaspoon water
1 tablespoon Worcestershire sauce
Salt and pepper, to taste
Instructions:

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