Pork and fennel pot pies

Ingredients

• 1 tablespoon olive oil
• 125 grams rindless bacon, chopped
• 1 medium leek, trimmed, washed, finely sliced
• 1 baby fennel bulb, trimmed, finely sliced
• 500 grams pork mince
• 2 tablespoons plain flour
• 1 teaspoon fennel seeds
• 1/2 teaspoon allspice
• 1/2 cup chicken stock
• 1/4 cup white wine
• 1/2 cup sour cream
• 1 sheet frozen puff pastry, cut into 4 squares
• 1 egg, lightly whisked
• steamed green beans, to serve