Put the diced cooked beetroot into a bowl. Add the chopped
spring onions, seeded and chopped red chilli, chopped fresh
mint, lemon juice and olive oil. Season and stir well.
Dust the fillets of unskinned firm white fish with a little plain flour.
Melt the butter in a large pan with the olive oil. Fry the fish
fillets on each side for 3-4 minutes until just tender. Serve with
the beetroot salsa.