01 - In a large mixing bowl, toss together the thinly sliced cucumbers, red onion, and chopped fresh dill until evenly distributed.
02 - In a small bowl, whisk together the white wine vinegar, olive oil, sugar, salt, and black pepper until the sugar is fully dissolved and the dressing is emulsified.
03 - Pour the dressing over the cucumber mixture and gently toss to coat all the vegetables evenly without bruising the slices.
04 - Refrigerate for at least 10 minutes to allow the flavors to meld together. Serve chilled as a refreshing side dish.