Cajun meatballs

Name: Cajun meatballs
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: American, Southern, Cajun And Creole
Ingredients: 2 tbsp butter; 2 tbsp plain flour; 1 onion , finely chopped; 1 green pepper , deseeded and finely chopped; 2 celery sticks, finely chopped; 2 garlic cloves , chopped; 1 bay leaf; 400g can plum tomato; 1 chicken stock cube; dash of Tabasco sauce or hot pepper sauce; 4 spring onions , finely sliced; handful coriander , roughly chopped; rice or mash , to serve; 1 tbsp Cajun seasoning; 500g pack turkey mince; 1 tbsp vegetable oil