1 small, firm cos lettuce, chopped into rough cubes lengthways
1 cucumber peeled, diced into 2cm/ΒΎin cubes
1 red pepper, de-seeded, diced
Β½ red onion, sliced finely
50g/2oz black Kalamata olives
100ml/3fl oz extra virgin olive oil
1 generous sprig of oregano (or 2 tsp dried oregano)
50ml/3 tbsp red wine vinegar
150g/5oz feta, diced