1 cucumber, peeled
Β½ bunch fresh mint, leaves roughly chopped
1 red onion, thinly sliced
Β½ watermelon (or 1 small watermelon), approx. 1.6kg/3lb 8oz
sea salt and freshly ground black pepper
Β½ tbsp honey
3 tbsp extra virgin olive oil
2 tbsp red wine vinegar
200g/7oz feta, crumbled