Ingredients
For the Scappi marinade
1 tbsp olive oil
300g/10½oz onions, finely sliced
4 tbsp white wine
4 tbsp wine vinegar
6 tbsp vino cotto (strongly reduced red wine); if unavailable, eliminate the wine, wine vinegar and vino cotto from the ingredients and use 10 tbsp balsamic vinegar instead
100g/3½oz sugar
pinch saffron powder
For the sardines
1kg/2lb 3oz very fresh sardines, cleaned, gutted and scaled
salt, to taste
plain flour, for dusting
olive oil, for shallow frying
To serve (optional)
lemon wedges
chopped fresh parsley

Method
1. For the marinade, heat the oil in a pan and fry the onions until softened. Transfer the onions to a large bowl and mix with all the remaining marinade ingredients. Set aside.
2. For the sardines, lay the sardines on a board and sprinkle with salt. Dust with flour.
3. Heat a generous amount of oil in a pan and fry the sardines until golden-brown on both sides.
4. Place the sardines into the bowl with the marinade and stir to coat.
5. You can eat the sardines immediately, with lemon juice or finely chopped parsley sprinkled on top. Otherwise, for proper 'sarde in saor', leave the sardines in the marinade for a day to absorb all the flavours. They'll keep in the fridge for a few days.