Ingredients
Method
1.In a small saucepan, bring the vinegar, water and sugar to the boil. Add the onion and simmer until softened – about 5 minutes. Remove from heat, then add the cucumber and salt. Steep for 10 minutes.
2.Brush the bread with oil, then grill in a hot pan or barbecue until charred in places.
3.In a large bowl, gently toss the pickled onion and cucumber with the currants and fish.
4.To serve, ladle spoonfuls of the fish mixture over the bread.