I am not Greek, I do not know some secret ancient recipe or anything, I just happen to like the sauce and tried to get as close as I could to it!
What you will need:
2 English Cucumbers, peeled, seeded, and chopped
1 cup Sour Cream
1 cup Plain Yogurt (or Greek)
2 tbsp. Olive Oil
1/2 tsp. Salt
1 tsp. Dill
3 tbsp. Minced Garlic
What you need to do:
If you have a tiny food processor, like me, it'll be a slower process, but not too slow!
Puree your cucumbers and add in some sour cream and/or yogurt and puree together.
Bring to a bowl and mix all ingredients together.
I, personally, use this sauce on my Greek Nachos, which I will have the recipe posted soon.