Rustic bread
This is a traditional Sicilian bread that you can make in the morning to get ahead
Make the dressing first. Set aside 8 of the berries in a bowl. Put the rest of the berries, the wine, vinegar and sugar in a medium pan, cover and simmer for 3 mins or until the berries are very soft. Mash the berries well, then pass the hot mixture though a sieve, on top of the reserved berries. Season and cool. It should be quite sharp and fruity, but blackberries vary hugely; if you need to, add more sugar and taste again.
Heat 1 tbsp butter in a large non-stick frying pan and add the apples. Cook for about 5 mins, turning the apples now and again, until golden and just tender. Can be done a few hours ahead.
When you’re ready to eat, dredge the livers in the seasoned flour and tap off the excess. Heat the rest of the butter in the pan and fry the livers for 5 mins or until golden, turning them halfway through cooking. When red juices start to run from the livers, you know that they are almost ready. Toss the apples back in the pan to warm through, then take it off the heat.
Spread the salad leaves across 1 large platter or 4 plates, and top with the livers, apples and walnuts. Whisk the oil into the blackberry dressing and spoon this over generously. Serve with crusty bread, if you like.