Easy savoury mince

Name: Easy savoury mince
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: Asian, Indian
Ingredients: 36.40 gm extra virgin olive oil; 1 brown onion, finely chopped; 2 celery stalks, finely chopped; 1 large Sebago potato, diced; 1 large carrot, diced; 500g beef mince; 2 garlic cloves, crushed; 22.20 gm tomato paste; 76.25 gm Worcestershire sauce, plus extra to serve; 2.50 gm curry powder; 20.00 ml instant gravy powder; 125.00 ml frozen peas; 4 thick slices white bread, toasted, to serve; 40.00 ml chopped fresh flat-leaf parsley leaves