01 - Place the thinly sliced cucumbers, red onion, and chopped fresh dill in a large mixing bowl.
02 - In a separate small bowl, whisk together the sour cream (or Greek yogurt), white wine vinegar (or lemon juice), sugar, salt, and black pepper until completely smooth and well blended.
03 - Pour the creamy dressing over the cucumber mixture and toss gently to coat all ingredients evenly without crushing the vegetables.
04 - Refrigerate the salad for at least 30 minutes to allow flavors to meld and develop. Serve chilled for optimal taste and texture.