2 Tablespoons mayonnaise
1 scallion, finely chopped (use white and green parts)
1/4 cup finely chopped sour pickles
1 Tablespoon chopped capers
If using regular nonfat yogurt, line a strainer with paper towels and set strainer over a bowl.
Note: This sauce tastes even better the next day. You may keep this sauce in the fridge in an airtight container for 2-3 days.