This cucumber salad is crisp, cool, and refreshingly light, with thinly sliced cucumbers and red onion tossed in a creamy, herby dressing made with sour cream, white wine vinegar, fresh dill, and garlic. It comes together in just 15 minutes with zero cooking required, making it the perfect no-fuss side dish for cookouts, potlucks, or weeknight dinners. The secret to keeping it perfectly crisp and flavorful is salting and draining the cucumbers first, so the dressing never turns watery. Once you try this version, it'll be on repeat all summer long.
Mandoline slicer Optional but recommended for thin, even cucumber slices
Large mixing bowl
Small bowl or mason jar For mixing the dressing
Sharp chef's knife
Cutting board
Colander or fine mesh strainer For draining salted cucumbers
Paper towels For patting cucumbers dry
Whisk or fork For combining the dressing
Salad serving bowl
Measuring spoons
Ingredients
For the Salad
2large English cucumbersor 4 Persian cucumbers; thinly sliced about 1/8 inch thick
1/2medium red onionthinly sliced
1/2tspsaltfor drawing out moisture from cucumbers; plus more to taste
For the Dressing
1/2cupsour creamabout 120ml; or substitute plain Greek yogurt for a lighter option
2tbspwhite wine vinegaror apple cider vinegar
1tbspextra virgin olive oil
1small garlic cloveminced
1tspgranulated sugar
1/4tspblack pepper
1/4tspsaltor to taste
Fresh Herbs
1tbspfresh dillchopped; or 1 tsp dried dill
1tbspfresh chiveschopped; reserve a pinch for garnish
For Garnish
fresh dillsmall pinch, reserved from above
fresh chivessmall pinch, reserved from above
Instructions
Wash and dry the cucumbers, then slice them into thin rounds about 1/8 inch thick using a mandoline or sharp knife. No need to peel English or Persian cucumbers; their skins are tender and add color.
Place the cucumber slices in a colander, sprinkle with 1/2 tsp salt, toss to coat, and let sit for 15 to 20 minutes to draw out excess moisture. Pat thoroughly dry with paper towels before using.
Slice the red onion as thinly as possible. For a milder flavor, soak the slices in cold water for 5 to 10 minutes, then drain and pat dry before adding to the salad.
Whisk together the sour cream, white wine vinegar, olive oil, minced garlic, sugar, black pepper, and 1/4 tsp salt in a small bowl until smooth and creamy. Stir in the chopped dill and chives, reserving a pinch of each for garnish.
Add the drained cucumbers and sliced red onion to a large bowl, pour the dressing over the top, and gently toss until every slice is evenly coated. Taste and adjust seasoning as needed.
Cover and refrigerate for at least 20 to 30 minutes to allow the flavors to meld, then garnish with reserved fresh dill and chives and serve cold.
Notes
Salt your cucumbers: Never skip this step. It draws out excess water so the dressing stays thick and clings to every slice instead of pooling at the bottom.
Slice thin: Aim for 1/8 inch or thinner. A mandoline slicer makes this effortless and gives you beautifully uniform rounds that absorb the dressing evenly.
Use fresh dill: Dried dill works in a pinch (use 1 tsp instead of 1 tbsp), but fresh dill gives the salad a vibrant, herby brightness that really elevates it.
Lighter version: Swap the sour cream for plain non-fat or full-fat Greek yogurt to reduce calories and add a protein boost without losing any creaminess.
Vinegar-based version: Omit the sour cream and increase the vinegar to 3 to 4 tablespoons for a sharp, oil-and-vinegar style cucumber salad.
Make-ahead tip: Slice and drain the cucumbers up to 24 hours ahead and store separately from the dressing. Toss together just before serving for the crispest result.
Tame the onion: Soaking sliced red onion in cold water for 5 to 10 minutes removes harsh bite while keeping the color vibrant. Drain and pat dry before using.
Storage: Store leftovers in an airtight container in the refrigerator for up to 2 days. Stir before serving and drain off any excess liquid that accumulates.
Do not freeze: Cucumbers become mushy and watery after freezing. This salad is best enjoyed fresh or within 2 days of making.
Cucumber choice: English or Persian cucumbers are ideal for their thin skins, fewer seeds, and sweeter flavor. If using regular garden cucumbers, peel them and scoop out the seeds first.