2 cups Greek yogurt
1 long English cucumber, peeled and grated
4 garlic cloves, peeled and crushed (or finely grated)
Juice of 1/2 lemon, or more according to taste
1 Tbsp chopped parsley
2 to 3 Tbsp extra virgin olive oil
Salt and pepper, to taste
In a bowl, mix together all ingredients. Serve fresh, in accompaniment.