Β½ cucumber, seeds removed, finely chopped
1 small fennel bulb, thinly sliced
2 lemons
3 tbsp finely chopped mint leaves
1 small red onion, finely chopped
small handful rocket leaves
2 vine tomatoes, finely chopped
salt and freshly ground black pepper
2 tbsp harissa paste
2 tbsp olive oil
1 tbsp cider vinegar
250g/9oz halloumi, thinly sliced
250g/9oz low-fat Greek-style yoghurt