Pie floaters

Name: Pie floaters
Prep time: 25 min
Cook time: 1 h 15 min
Total time: 1 h 40 min
Cuisine: British, Australian
Ingredients: 1 1/2 tbsp olive oil; 1 brown onion, finely chopped; 500g beef mince; 70g (1/4 cup) tomato paste; 2 tbsp plain flour; 375ml beer; 375ml (1 1/2 cups) Massel chicken style liquid stock; 2 tsp Vegemite; 1/4 cup chopped fresh continental parsley; 1/2 brown onion, extra, finely chopped; 1 (about 100g) golden delight potato, peeled, finely chopped; 300g (2 cups) frozen peas; 1 tbsp chopped fresh mint; 750ml (3 cups) chicken stock; 4 sheets frozen butter puff pastry, just thawed; 1 tbsp creme fraiche