The other night, we made our own falafel wraps for dinner. We cheated and bought a box mix where we only had to add water. Surprisingly, they were actually pretty decent. On the side of the box (Fantastic Foods brand, I think) there was a recipe for "cucumber yogurt sauce" which sounded an awful lot like tatziki to me. I made it for our wraps and it was good. I used the leftovers to eat with bagel chips as a snack.
1 pint Plain Yogurt
2 Garlic Cloves, diced
1 medium Cucumber, peeled, seeded and chopped
1 tablespoon Dill
Splash of Lemon Juice
Salt & Pepper to taste
Try to strain the yogurt for a little while before making this sauce so that it can thicken. Mix all ingredients together in a bowl and allow it to sit for the flavors to marry, at least 30 minutes.