You can also add some garlic powder, but I didn’t because I use garlic in everything and I didn’t want it to taste like tzatziki…
So, boil the potatoes until tender, and while boiling mix the rest of the ingredients together until smooth. Chill for at least half an hour. Peel and cut potatoes in cubes, mix altogether and chill again.
Serves 3-5 as a side dish.
from http://ninaki.wordpress.com/2008/09/03/cold-potato-salad/