Step 1

In a large mixing bowl, whisk together sour cream, white vinegar, sugar, and chopped dill until well combined.

Step 2

Add the thinly sliced cucumbers and red onion to the dressing and toss until they are evenly coated. Season with salt and pepper to taste.

Step 3

Cover the salad and refrigerate for at least 1 hour before serving to allow the flavors to meld.