Best-ever Aussie sausage rolls

Name: All new Aussie sausage rolls
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Yield: 18
Ingredients: 400g sausage mince; 300g beef mince; 1 brown onion, coarsely grated; 1 carrot, peeled, coarsely grated; 2 garlic cloves, crushed; 35g (1/2 cup) fresh breadcrumbs; 62.50 ml chopped fresh continental parsley; 2 eggs; 3 sheets frozen puff pastry, just thawed; 2.40 gm sea salt flakes; Kewpie mayonnaise, to serve; Barbecue sauce, to serve; Fresh coriander sprigs, to serve