For the Peppercorn Sauce, peel your cucumber and grate it into a bowl.
Add a Teaspoon of salt and let sit for 10 minutes (to allow the liquid to leech out).
While you are waiting, put the Greek yogurt in a separate bowl and add the remaining ingredients.
Add the peppercorn, dill, and mint to taste.
After the 10 minutes, place the cucumber pieces in a cloth and squeeze out all the liquid.
Add to the yogurt — mix, cover, and chill until ready to use.