Courgette, walnut and yogurt mezze

 (serves 4 as a dip)

3 medium sized firm courgettes
60 g walnuts
½ cloves garlic
½ lemon
1 tbsp tahini
3 tbsp olive oil
1 tsp salt
10g flat leaf parsley
2 tbsp Greek yogurt
freshly ground black pepper

Grate the courgettes, add the salt and leave to drain in a colander for 15 or so minutes then give them a good squeeze to extract as much moisture as possible.
Heat a frying pan over a moderate heat and add 2 tbsp of the olive oil.
Fry the courgettes gently for 10 or so minutes or until all the liquid has evaporated and the courgettes have softened.
Add the courgettes to a mixing bowl and leave to cool.
Bash the walnuts roughly in a pestle and mortar.
When the courgettes are cool, add the juice of the lemon, finely chopped or mashed garlic,three-quarters of the walnuts, and the yogurt and tahini (if you want a completely smooth dip, put all the ingredients into a food processor and blend until smooth).
Serve on a plate and garnish with the chopped parsley, remaining walnuts and tablespoon of oil.