Tzatziki (Garlic, cucumber and yogurt dip)

4 - 5 tablespoons Sitia Extra Virgin Olive Oil
1 lb strained yogurt
2 large cucumbers
3 gloves garlic
1/2 teaspoon salt
2 tablespoons vinegar
1 tablespoon finely chopped mint or dill (optional)

Peel and grate cucumbers. Squeeze as hard as possible to remove water completely. Mash garlic with salt in a mortar. In a medium-sized bowl, mix yogurt with cucumber and garlic. Slowly add vinegar and olive oil and combine well. Finally add mint or dill. Refrigerate until ready to use.