Wash the cucumber thoroughly and finely chop it.
Finely mince the garlic.
Add Greek yogurt to a large bowl.
Add the chopped cucumber, garlic, olive oil, lemon juice, salt, and pepper to the yogurt.
Mix well and let it rest in the refrigerator for at least 30 minutes.
Serve on a plate and finish with a drizzle of olive oil and herbs (dill or mint).