Recipe: Seafood bowl with bacon, spinach and coriander

Name: Recipe: Seafood bowl with bacon, spinach and coriander
Cuisine: Southern, Mediterranean, African, American, European, Greek, Portuguese, Moroccan
Ingredients: 3 large onions; 50g • 2oz coriander leaves and fine stalks only; 500g • 1lb 2oz spinach leaves; 50g • 2oz unsalted butter; sea salt and black pepper; 150ml • ¼ pt white wine; 900ml • 1½ pt chicken stock; 600g • 1lb 6oz cod loin or fillet skinned weight; 1 tsp vegetable oil; 6 rashers rindless unsmoked back bacon diced; 300g • 11oz cooked and peeled crayfish or good-sized prawns; extra coriander leaves to serve