1 kg (2 lb) potatoes
1 kg (2 lb) sardines, defrosted if frozen
1 tbsp olive oil, plus extra for oiling
1 onion, chopped
2 - 3 garlic cloves, crushed
2 tbsp chopped fresh parsley
350 g (12 oz) ripe tomatoes, peeled and sliced or 425 g (14 oz) can peeled tomatoes, partly drained and chopped
1 - 2 tbsp chopped fresh Italian herbs, such as oregano, thyme, rosemary, marjoram
150 ml (1/4 pint) 2/3 cup dry white wine
salt and pepper