To begin, mix together the olive oil, soy sauce and pepper. Add the trout fillets, coating well in the mixture, and leave to marinate in the fridge for at least half an hour

Meanwhile, preheat the barbecue. When the coals are nice and hot, position a piece of tin foil over the grill, using stones to weight it down

Carefully lay the marinated trout fillets over the foil. Cook over the coals for 4–6 minutes, turning often until nearly cooked and the flesh is still lovely and pink in the centre

A couple of minutes into this cooking time, toss the cucumbers in a little oil, season and place on the barbecue, turning until just beginning to char

Meanwhile, prepare a simple green salad dressed with a little extra virgin olive oil, balsamic vinegar and seasoning

When the fish and cucumber is ready, gently remove from the barbecue and serve with the lightly dressed salad