It's a very flavourful sauce, fresh and tasty - in fact, the main plus is that it's so quick and the ingredients are easy to get. I recommend Tzatzitki for potatoes, meat, vegetables etc. - it goes together with almost any meal and it's something between salad and sauce - so it can also be served as such.
Finely chop the cucumber or, even easier, use the big holes side of the grater.
In a bowl, add the cucumbers and chopped dill, this is optional.
Finely chop the mint and add to the rest of the ingredients.
Crush the garlic and tip into the bowl.
Pour in the yogurt and salt and mix well all the ingredients.
Sprinkle some olive oil on top and that's all.
Enjoy!