Seared tuna with agrodolce

For the agrodolce sauce:

red wine vinegar

crushed red pepper flakes

honey

salt flakes

–4 T red onion, finely chopped

sultanas, roughly chopped

green olives, finely chopped

orange, zested and juiced

–2 T pine nuts, toasted

–2 T Italian parsley, finely chopped

For the tuna:

x 150–200 g portions fresh tuna

olive oil

sea salt and freshly ground black pepper,