Tender potatoes, crisp cucumber, sharp red onion, and fresh chives come together in this creamy summer potato salad with a tangy Dijon dressing.
It is lighter and fresher than a loaded potato salad but still has the creamy texture people expect at a backyard barbecue. Cucumber adds a cool crunch that makes the salad especially good alongside grilled burgers, ribs, chicken, sandwiches, or picnic food.
The key is treating the potatoes and cucumber a little differently. The warm potatoes get a splash of apple cider vinegar immediately after draining so they absorb flavor while they are still receptive. The cucumber is lightly salted and drained before joining the salad so it stays crisp without watering down the dressing.
Make the salad a few hours ahead and let it chill before serving. The flavors improve as they sit, making this an ideal side dish for summer cookouts, potlucks, Fourth of July parties, and casual dinners outside.
🥔 Cucumber Potato Salad Recipe
Prep time: 25 minutes
Cook time: 15 minutes
Chilling time: At least 1 hour
Total time: About 1 hour 40 minutes
Servings: 6–8
🛒 Ingredients
For the Salad
- 2 pounds Yukon Gold or red potatoes
- 1 large English cucumber
- 1/2 small red onion, finely chopped
- 3 green onions, thinly sliced
- 1/4 cup chopped fresh chives
- 2 tablespoons chopped fresh dill, optional
- 1 tablespoon apple cider vinegar
- 1 teaspoon kosher salt, plus more for the potato water
- Freshly ground black pepper
For the Creamy Dijon Dressing
- 3/4 cup mayonnaise
- 1/3 cup sour cream
- 2 tablespoons Dijon mustard
- 1 tablespoon apple cider vinegar
- 1 teaspoon honey or granulated sugar
- 1/2 teaspoon celery seed, optional
- 1/2 teaspoon kosher salt
- Freshly ground black pepper
🥔 Choose Waxy Potatoes
Yukon Gold and red potatoes are both excellent choices for potato salad because they hold their shape after cooking.
Russet potatoes contain more starch and break apart more easily. That can be desirable if you like a softer, creamier potato salad, but for this version the goal is distinct potato chunks surrounded by crisp cucumber.
There is no need to peel thin-skinned Yukon Gold or red potatoes unless you prefer them without the skin.
Leaving the skins on adds color and saves preparation time.
🔪 Cut the Potatoes Evenly
Scrub the potatoes and cut them into pieces roughly 3/4 to 1 inch across.
Try to keep the pieces similar in size so they finish cooking at approximately the same time.
Very small pieces can become overcooked and break apart before larger chunks are tender.
Place the potatoes directly into a large saucepan as you cut them.
💧 Start the Potatoes in Cold Water
Cover the potatoes with cold water by about an inch.
Season the water generously with salt.
Starting potatoes in cold water allows the centers to heat more gradually and cook at approximately the same rate as the exteriors.
If you drop cold potato chunks directly into vigorously boiling water, the outside can become overly soft before the center finishes cooking.
🔥 Cook Until Just Tender
Bring the water to a boil.
Reduce the heat to maintain a steady simmer and cook for approximately 10 to 15 minutes.
Begin checking early.
A paring knife or fork should slide into a potato piece easily, but the chunks should not crumble when lifted.
For potato salad, it is better to stop when the potatoes are just tender than to cook them until they begin falling apart.
🍎 Season the Potatoes While Warm
Drain the potatoes thoroughly.
Transfer them to a large bowl while they are still warm.
Drizzle with 1 tablespoon apple cider vinegar and gently toss.
Season lightly with salt and black pepper.
Let the potatoes cool for about 20 to 30 minutes.
This small step makes a substantial difference because warm potatoes absorb some of the vinegar rather than relying on the creamy dressing to provide all of the seasoning.
Food Network uses a similar technique in its American potato salad, tossing freshly cooked potatoes with cider vinegar before adding the mayonnaise dressing.
🥒 Prepare the Cucumber
Cut the English cucumber lengthwise.
If the center is especially watery or contains large seeds, scoop some of it out with a spoon.
Cut the cucumber into small cubes.
Place the pieces in a colander and sprinkle with a small pinch of salt.
Let them drain for about 15 minutes while the potatoes cool.
Pat the cucumber dry with a clean kitchen towel or paper towels before adding it to the salad.
💧 Why Drain the Cucumber?
Cucumbers contain a great deal of water.
Once cut and salted, they begin releasing some of that moisture.
If all of the cucumber liquid ends up in the bowl, a potato salad that was thick and creamy when first mixed can become watery several hours later.
A brief draining period removes some excess liquid while preserving the cucumber’s fresh crunch.
It is especially useful when the salad will be made ahead.
🧅 Prepare the Red Onion
Finely chop half of a small red onion.
If you enjoy a strong raw-onion flavor, add it directly to the salad.
For a milder taste, place the chopped onion in a bowl of ice water for about 10 minutes.
Drain thoroughly and pat dry.
The cold-water soak removes some of the sharp sulfur compounds responsible for raw onion’s aggressive bite while leaving its crisp texture intact.
🥣 Make the Creamy Dijon Dressing
In a medium bowl, whisk together the mayonnaise, sour cream, Dijon mustard, apple cider vinegar, honey or sugar, optional celery seed, salt, and black pepper.
Taste the dressing before adding it to the potatoes.
It should taste slightly stronger and tangier than you want the finished salad to taste because the potatoes and cucumber will soften the seasoning.
Add another teaspoon of vinegar if you prefer a particularly tangy potato salad.
🌿 Add Fresh Herbs
Chives are the main herb in this version.
Their gentle onion flavor complements the red and green onions without overwhelming the cucumber.
Fresh dill is optional but highly recommended if you enjoy it.
Dill, cucumber, potato, sour cream, and mustard naturally work together.
Parsley can replace the dill if you want a milder herbal flavor.
🥗 Assemble the Potato Salad
Once the potatoes have cooled to room temperature, add the drained cucumber, red onion, green onions, chives, and optional dill.
Pour over about three-quarters of the dressing.
Fold everything together gently with a large spoon or flexible spatula.
Try not to aggressively stir or mash the potatoes.
Add the remaining dressing only if the salad needs it.
Different potatoes absorb different amounts, and some people prefer a much more lightly dressed salad.
❄️ Chill Before Serving
Cover the bowl and refrigerate for at least 1 hour, although 2 to 3 hours is even better.
Chilling gives the dressing time to season the potatoes and mellows the red onion.
Before serving, gently stir the salad and taste again.
Cold foods can taste less strongly seasoned than warm foods, so you may want another pinch of salt, black pepper, vinegar, or fresh herbs.
🌿 Finish with Chives
Transfer the potato salad to a serving bowl.
Scatter fresh chives over the top.
A little freshly ground black pepper adds contrast.
For extra color, sprinkle lightly with paprika.
Serve cold or cool rather than letting the salad sit at room temperature for an extended period.
🥔 Why Yukon Gold Potatoes Work So Well
Yukon Gold potatoes strike an excellent balance between waxy and starchy.
They hold together well enough for potato salad while still having a creamy interior.
Their naturally buttery flavor also works well with Dijon mustard, sour cream, cucumber, and chives.
Red potatoes are slightly firmer and are equally good when you prefer a more defined chunky texture.
Fingerling potatoes can work as well, particularly for a more rustic-looking salad.
🥒 Why Put Cucumber in Potato Salad?
Cucumber changes both the texture and personality of potato salad.
Traditional creamy potato salad can be quite rich, particularly when made with eggs and a large quantity of mayonnaise.
Cucumber adds freshness and crunch without making the recipe complicated.
It also makes the salad particularly appealing during hot weather.
Instead of every bite being soft and creamy, the potato pieces are interrupted by crisp, cool cucumber.
🥣 Why Use Mayonnaise and Sour Cream?
Mayonnaise provides the classic creamy potato-salad texture.
Sour cream adds tang and makes the dressing taste lighter.
Using both creates a good balance.
An all-mayonnaise dressing will work if you prefer it, but the cucumber-and-chive character of this particular salad benefits from the acidity of sour cream.
Full-fat Greek yogurt can replace the sour cream for an even tangier variation.
🌭 Why Dijon Mustard?
Dijon mustard contributes acidity, spice, and savory depth without making the salad taste strongly of yellow mustard.
Two tablespoons provide a noticeable tang.
For a more classic American picnic flavor, substitute yellow mustard.
Whole-grain mustard is another good option and adds visible mustard seeds throughout the dressing.
🍎 Apple Cider Vinegar Adds Brightness
Apple cider vinegar is used twice.
The first tablespoon goes directly onto the warm potatoes.
The second goes into the dressing.
That creates acidity throughout the salad rather than leaving all of it on the surface.
White wine vinegar works as a substitute.
Rice vinegar creates a slightly milder result.
Distilled white vinegar is sharper, so use a little less and taste before adding more.
🥚 Add Hard-Boiled Eggs
For a more classic American potato salad, add 3 chopped hard-boiled eggs.
Fold them in carefully after the dressing has been added.
Egg gives the salad additional richness and makes it feel more substantial.
Food Network’s classic American version combines potatoes with hard-boiled eggs, mayonnaise, sour cream, mustard, pickles, celery, scallions, and parsley.
Because cucumber already gives this version plenty of fresh crunch, eggs are optional rather than essential.
🌿 Add Fresh Dill
Cucumber and dill are a natural pairing.
Use 2 tablespoons chopped fresh dill in addition to the chives.
For a stronger dill flavor, increase it to 1/4 cup.
Dried dill can work in a pinch, but fresh dill gives this salad a much brighter summer character.
🥒 Add Dill Pickles
Chopped dill pickles bring extra tang and crunch.
Add about 1/3 cup.
You can also replace a teaspoon or two of the apple cider vinegar in the dressing with pickle brine.
This moves the salad closer to a classic deli-style potato salad while retaining the fresh cucumber.
🌱 Add Celery
For even more crunch, add one or two finely chopped celery stalks.
Celery has a stronger savory flavor than cucumber and makes the salad feel more traditional.
If adding both cucumber and celery, chop everything fairly small so neither vegetable overwhelms the potatoes.
🫑 Add Bell Pepper
Finely diced red bell pepper adds sweetness and color.
Use approximately 1/2 cup.
Green bell pepper has a sharper flavor and is better used in smaller amounts.
Yellow or orange peppers offer a sweeter alternative.
🥓 Add Bacon
Crisp bacon can certainly be added, but if you want a full loaded baked-potato-style version, your Labor Day recipe roundup already has a dedicated loaded potato salad.
For this recipe, I would keep bacon optional so the cucumber, herbs, and tangy dressing remain the defining flavors.
If you do add it, 4 to 6 crisp crumbled strips are plenty.
🌱 Make It Vegetarian
As written, this salad is vegetarian.
Check mayonnaise and other prepared ingredients if you follow a particular dietary standard, but there is no meat in the base recipe.
That makes it useful at cookouts where the main dishes may otherwise be heavily focused on burgers, ribs, or chicken.
🌿 Make It Vegan
Use a vegan mayonnaise and plant-based sour cream.
Everything else in the basic salad can remain the same.
Another option is to make an olive-oil-and-mustard potato salad instead of trying to reproduce a creamy dressing, although that produces a substantially different dish.
🌶️ Add a Little Heat
Finely chop one jalapeño and add it with the cucumber.
For gentler heat, remove most of the pale inner membrane before chopping.
A small pinch of cayenne in the dressing is another option.
For tangy spice, use chopped Quick Pickled Jalapeños instead.
🍋 Make It Lemony
Replace the apple cider vinegar in the dressing with fresh lemon juice.
Add about a teaspoon of finely grated lemon zest.
Lemon works especially well with cucumber, dill, chives, and sour cream.
The result tastes particularly fresh alongside grilled salmon or chicken.
🥒 Make a Cucumber-Dill Potato Salad
Increase the cucumber to 1 1/2 large English cucumbers and use 1/4 cup fresh dill.
Reduce the red onion slightly.
This creates a cooler, more cucumber-forward salad almost halfway between American potato salad and a creamy cucumber salad.
If that combination appeals to you, Pop & Thistle also has a separate German Cucumber Salad made with sour cream, vinegar, lemon, dill, onion, and tomato.
🍖 What to Serve with Potato Salad
Potato salad belongs beside almost anything coming off a summer grill.
Serve it with:
- Hamburgers
- Hot dogs
- Barbecue ribs
- Grilled chicken
- Pulled pork
- Sausages
- Grilled fish
- Vegetable burgers
- Portobello mushrooms
- Corn on the cob
Because this version includes cucumber and herbs, it provides a particularly nice fresh contrast to smoky barbecue.
🎆 Serve It on the Fourth of July
Potato salad is a natural addition to an Independence Day cookout.
The cucumber version is especially useful because it feels lighter beside burgers, barbecue, corn, and richer side dishes.
For a complete menu, see Easy 4th of July Recipes for a Crowd: Mains, Sides & Desserts.
Make the potato salad in the morning or the evening before, keep it refrigerated, and bring it out shortly before everyone eats.
☀️ Serve It for Labor Day
This also works perfectly for an end-of-summer Labor Day cookout.
Pair it with grilled burgers, ribs, corn, watermelon, or vegetable skewers.
For more ideas, see 6 Easy Labor Day Recipes for an End-of-Summer Cookout.
🧺 Take It to a Picnic
Potato salad travels well as long as you can keep it cold.
Pack it in a sealed container inside a well-insulated cooler with plenty of ice or frozen gel packs.
Keep the cooler shaded and closed as much as possible.
For larger gatherings, consider dividing the salad between two smaller containers.
Put out one and leave the second safely chilled until needed.
☀️ Does Mayonnaise Make Potato Salad Dangerous in the Heat?
The issue is broader than mayonnaise alone.
Potato salad is a prepared perishable food and needs proper temperature control regardless of whether the dressing is mayonnaise-based or vinaigrette-based.
Cooked potatoes and cut vegetables can support bacterial growth when held for too long at unsafe temperatures.
Commercial mayonnaise itself is acidic, but that does not turn an entire bowl of mixed potato salad into shelf-stable food.
Keep the finished salad cold.
🌡️ Keep Potato Salad at 40°F or Below
USDA guidance recommends keeping cold perishable foods at 40°F or below.
At an outdoor party, nest the serving bowl in a larger bowl filled with ice.
Another good strategy is to put out a smaller portion and refill it from a refrigerated container or cooler as needed.
Do not continuously add fresh cold salad to a bowl that has already been sitting warm for hours.
⏰ Follow the Two-Hour Rule
Perishable foods should generally not remain at room temperature for longer than 2 hours.
When temperatures are above 90°F, that limit drops to 1 hour.
Summer cookouts can easily cross that 90°F threshold.
If you cannot remember exactly how long the potato salad has been sitting in the heat, err on the side of caution rather than returning it to the refrigerator for later.
⏰ Can You Make Potato Salad Ahead?
Yes, and this recipe is better after at least an hour of chilling.
You can make it the day before serving.
The potatoes absorb flavor from the dressing while the onion becomes less sharp.
If preparing it ahead, draining the cucumber becomes particularly important because the vegetable has more time to release water.
Reserve a little fresh chive and dill for adding just before serving.
💧 Why Is My Potato Salad Watery?
Cucumber is the first thing to check.
If it goes into the bowl immediately after cutting, it can release a surprising amount of water as the salad chills.
Salt and drain the cucumber first.
Overcooked potatoes can also release excessive moisture and starch into the dressing.
Finally, make sure the potatoes are thoroughly drained before assembling the salad.
🥔 Why Is My Potato Salad Mushy?
The potatoes were probably overcooked or stirred too aggressively.
Begin checking them early.
As soon as a knife enters the center without significant resistance, drain them.
Once the dressing is added, fold rather than vigorously stir.
Waxy potatoes such as Yukon Gold or red potatoes are also much more forgiving than russets.
🥣 Why Does My Potato Salad Taste Bland?
Potatoes need a surprising amount of seasoning.
Salt the cooking water.
Season the warm potatoes with vinegar and a little salt.
Make sure the dressing tastes assertive before adding it.
Then taste the finished salad again after chilling.
Often the missing ingredient is not more mayonnaise but another pinch of salt or splash of vinegar.
Fresh herbs can also wake up a salad that tastes flat.
🧅 Why Is the Onion Too Strong?
Raw red onion becomes more noticeable after several hours in the refrigerator.
Use a smaller amount or soak the chopped onion in cold water for 10 minutes before adding it.
Green onions and chives can provide onion flavor without the same sharp bite.
You can also replace the red onion with finely chopped shallot.
❄️ How to Store Leftover Potato Salad
Transfer leftovers promptly to an airtight container and refrigerate at 40°F or below.
For best quality, eat homemade potato salad within about 3 to 4 days.
The cucumber will gradually lose some crispness and release additional moisture, so the salad is best during the first couple of days.
Stir gently before serving again.
🧊 Can You Freeze Potato Salad?
I don’t recommend it.
Cooked potatoes can become grainy or watery after freezing and thawing.
Mayonnaise- and sour-cream-based dressings can separate.
Cucumber also loses its crisp texture.
This is much better made fresh in a quantity your household can reasonably finish within several days.
🥒 A Fresher Take on Summer Potato Salad
Potato salad does not have to be heavy to feel satisfying.
Keeping the potatoes chunky, adding crisp cucumber, using plenty of fresh chives, and balancing mayonnaise with sour cream and Dijon produces a salad that still feels familiar but is particularly suited to warm-weather meals.
The technique matters as much as the ingredients.
Cook the potatoes only until tender. Give them vinegar while they are still warm. Drain the cucumber before it enters the bowl. Dress everything gently and let the finished salad chill before serving.
Those simple steps create creamy potatoes, crisp vegetables, and enough acidity to keep every bite fresh.
Set the bowl beside burgers, barbecue ribs, grilled chicken, or corn on the cob, and you have exactly the sort of easy summer side dish that belongs at a picnic table.
🔗 Related Articles
- Easy 4th of July Recipes for a Crowd: Mains, Sides & Desserts
- 6 Easy Labor Day Recipes for an End-of-Summer Cookout
- German Cucumber Salad
- Quick Pickled Jalapeños
