When you need a side dish that is fresh, crisp, and ready with almost no effort, this Cucumber, Onions & Vinegar Salad is one to keep in your back pocket. Thinly sliced cucumbers and onions are tossed in a simple tangy vinegar dressing that gets even better as it sits.
This classic-style cucumber salad is light enough for a hot summer day but flavorful enough to serve alongside grilled chicken, burgers, barbecue, sandwiches, or just about any weeknight dinner. It’s also an excellent make-ahead side because flavors have time to mingle in refrigerator.
With a handful of everyday ingredients and no cooking required, this is an easy salad for busy cooks, potlucks, picnics, and family meals.
Why You’ll Love This Cucumber Salad
- Takes only about 10 minutes to prepare.
- No cooking or complicated equipment required.
- Crisp cucumbers and crunchy onions provide plenty of texture.
- Vinegar dressing is tangy, lightly sweet, and refreshing.
- Perfect for warm-weather meals.
- Easy to make ahead.
- Pairs beautifully with grilled meats and sandwiches.
- Naturally vegetarian and easy to adapt.
Ingredients
For Salad
- 4 medium English cucumbers or 5–6 small cucumbers, thinly sliced
- 1 small yellow or white onion, thinly sliced
- 2 tablespoons fresh parsley or dill, chopped, optional
For Vinegar Dressing
- ½ cup apple cider vinegar or white vinegar
- 2 tablespoons granulated sugar
- 2 tablespoons extra-virgin olive oil
- ½ teaspoon salt
- ¼ teaspoon black pepper
- ½ teaspoon garlic powder, optional
Choosing the Best Cucumbers
English cucumbers are especially good for this recipe because they have thin skins and fewer seeds. You can leave the skin on, which adds color and crunch.
Regular garden cucumbers work too. If they have large seeds or feel watery inside, slice them lengthwise and scoop out some of seeds before slicing.
Ingredient Substitutions
- Vinegar: Apple cider vinegar gives salad a slightly fruity tang, while white vinegar creates a sharper classic flavor. Rice vinegar can be used for a milder version.
- Onion: Red onion adds beautiful color and a slightly sharper flavor. Sweet onion works well if you prefer a milder taste.
- Sugar: Use honey instead of granulated sugar for a softer sweetness.
- Herbs: Fresh dill, parsley, or chives can all be used.
- Olive oil: Use a neutral oil such as avocado oil if preferred.
Kitchen Tools Needed
- Large mixing bowl
- Small bowl or measuring cup
- Sharp knife or mandoline
- Cutting board
- Whisk
- Refrigerator-safe container
How to Make Cucumber, Onions & Vinegar Salad
1. Slice Vegetables
Wash the cucumbers and slice them thinly.
Thin slices allow the vinegar dressing to coat more of the surface and give the salad its classic texture.
Thinly slice the onion as well. If the onion tastes particularly strong, soak the slices in cold water for about 5 minutes, then drain well.
2. Make the Vinegar Dressing
In a small bowl, whisk together vinegar, sugar, olive oil, salt, black pepper, and garlic powder if using.
Whisk until the sugar is mostly dissolved and the dressing looks evenly combined.
Taste the dressing before adding it to the vegetables. You can add a little more sugar for sweetness or vinegar for extra tang.
3. Combine Everything
Place the sliced cucumbers and onions in a large bowl.
Pour dressing over top and gently toss until all the vegetables are coated.
Add fresh dill or parsley if using.
4. Chill
Cover bowl and refrigerate for at least 30 minutes.
For even better flavor, let the salad chill for 1–2 hours. Cucumbers and onions will absorb more of tangy dressing as they sit.
5. Toss and Serve
Give the salad another gentle toss before serving.
Taste and adjust the seasoning if needed. Serve cold or slightly chilled.
Pro Tips for Best Cucumber Salad
Slice the cucumbers evenly
A mandoline makes quick work of thin, consistent slices, but a sharp knife works perfectly well.
Don’t drown the vegetables
The cucumbers will release some moisture as they sit. Start with the recommended amount of dressing rather than adding too much.
Salt strategically
If you plan to make the salad several hours ahead, lightly salt the cucumber slices and let them sit for 15–20 minutes. Drain and gently pat them dry before adding the dressing. This helps reduce excess water and keeps the salad crisp.
Let it rest
The salad tastes good immediately, but a short rest in the refrigerator gives the vinegar, onion, and herbs time to mingle.
Adjust the sweetness
Some vinegars are sharper than others. Taste the dressing and adjust the sugar to suit your preference.
Variations
Creamy Cucumber Salad
Replace part of vinegar dressing with sour cream or Greek yogurt for a creamy version.
Dill Cucumber Salad
Add 2–3 tablespoons of fresh chopped dill for a classic herb-forward flavor.
Tomato Cucumber Salad
Add halved cherry tomatoes for extra color and freshness.
Spicy Cucumber Salad
Add thinly sliced jalapeño or a pinch of red pepper flakes.
Sweet Onion Cucumber Salad
Use sweet onion and a little extra sugar for a milder, sweeter salad.
Lemon Cucumber Salad
Replace a portion of the vinegar with fresh lemon juice and add grated lemon zest.
What to Serve With Cucumber, Onions & Vinegar Salad
This refreshing salad works especially well alongside grilled and roasted foods.
Try serving it with:
- Grilled chicken
- Turkey burgers
- Pulled pork
- Grilled steak
- BBQ ribs
- Baked salmon
- Grilled shrimp
- Hot dogs and burgers
- Sandwiches
- Baked potatoes
For a summer meal, pair it with grilled chicken, corn on the cob, and iced tea.
Storage Instructions
Refrigerator
Store the salad in an airtight container in the refrigerator for up to 3 days.
The cucumbers will become softer the longer they sit, so it’s best enjoyed within the first 1–2 days for maximum crunch.
Freezer
Freezing is not recommended. Cucumbers become watery and lose their crisp texture after thawing.
Before Serving
Give the salad a gentle toss before serving because some of the dressing may settle at the bottom.
Make-Ahead Tips
This salad is ideal for making ahead.
Prepare it at least 30 minutes before serving. For the best flavor, make it 1–2 hours ahead and refrigerate.
If you’re preparing it a day ahead, consider draining some of the excess liquid before serving and refreshing it with a small splash of vinegar.
Frequently Asked Questions
Can I make cucumber salad ahead of time?
Yes. In fact, the flavor improves after the salad rests for a while. Prepare it 1–2 hours ahead and keep it refrigerated.
Why did my cucumber salad become watery?
Cucumbers naturally contain a lot of water. As they sit in the dressing, they release some of that moisture. Salting and draining the cucumbers beforehand can help.
Should I peel the cucumbers?
You don’t have to. English cucumbers have thin, tender skins that work especially well in this salad.
What vinegar is best?
Apple cider vinegar gives a slightly mellow, fruity tang, while white vinegar provides a sharper traditional flavor. Both work well.
Can I use red onion?
Absolutely. Red onion adds color and a stronger onion flavor. Soaking it briefly in cold water can mellow its bite.
Can I make this salad without sugar?
Yes. The sugar balances the acidity of the vinegar, but you can reduce it or replace it with a small amount of honey.
How long does cucumber vinegar salad last?
It can be refrigerated for up to 3 days, although the cucumbers are crispest during the first day or two.
Can I add tomatoes?
Yes. Cherry or grape tomatoes are a delicious addition. Add them shortly before serving for the best texture.
Cucumber, Onions & Vinegar Salad
Ingredients
Method
- Wash and thinly slice the cucumbers.
- Thinly slice the onion. For a milder onion flavor, soak the slices in cold water for 5 minutes, then drain well.
- In a small bowl, whisk together vinegar, sugar, olive oil, salt, black pepper, and garlic powder.
- Continue whisking until the sugar is mostly dissolved and the dressing is well combined.
- Place the sliced cucumbers and onions in a large mixing bowl.
- Pour the vinegar dressing over the vegetables.
- Add chopped fresh dill or parsley, if using.
- Gently toss everything together until the cucumbers and onions are evenly coated.
- Cover and refrigerate for at least 30 minutes.
- For the best flavor, chill for 1–2 hours before serving.
- Toss gently again before serving and adjust salt or vinegar to taste.
- Wash and thinly slice the cucumbers.
- Thinly slice the onion. For a milder onion flavor, soak the slices in cold water for 5 minutes, then drain well.
- In a small bowl, whisk together vinegar, sugar, olive oil, salt, black pepper, and garlic powder.
- Continue whisking until the sugar is mostly dissolved and the dressing is well combined.
- Place the sliced cucumbers and onions in a large mixing bowl.
- Pour the vinegar dressing over the vegetables.
- Add chopped fresh dill or parsley, if using.
- Gently toss everything together until the cucumbers and onions are evenly coated.
- Cover and refrigerate for at least 30 minutes.
- For the best flavor, chill for 1–2 hours before serving.
- Toss gently again before serving and adjust salt or vinegar to taste.
