Cucumber Salad

This refreshing, easy cucumber salad recipe is perfect for hot days! A little sesame oil & a splash of rice vinegar give it a nutty, tangy pop of flavor.

Cucumber salad

The first time I tried a sweet, vinegary cucumber salad, I was hooked. The cool, crisp cucumbers burst with tangy flavor, onion added just the right amount of bite, and a sprinkle of dill gave it an addictive, pickle-like taste. When English cucumbers started popping up at the farmers’ market this summer, I immediately thought of that first bite of cucumber salad, and I knew that I wanted to make a version to share with all of you.

This cucumber salad recipe is the quintessential summer dish. Like all the best summer recipes, it requires just a few ingredients to pack a big punch of flavor. It’s delectably salty & sweet, and the chilled cucumbers and red onion are super refreshing on hot summer days. It takes just 15 minutes to make (including 10 minutes of hands-off chill time), so toss it together and enjoy it as a dinner side or – like me – eat it straight out of the bowl!

Cucumber salad recipe ingredients

Cucumber Salad Recipe Ingredients

The best thing about this bright, fresh, addictive cucumber salad recipe is that it requires just 8 ingredients:

  • English cucumber! I use a mandoline to get my slices nice & thin.
  • Red onion. The thinner these guys are the better, so if you have a mandoline, use it for the onion as well as the cucumber.
  • Rice vinegar, sesame oil & honey combine to make a light, sweet & savory dressing for the crisp veggies.
  • Dill & mint. This combo adds delicious freshness to the cool cucumbers and onions.
  • Pickled mustard seeds. I list these as optional, but I highly recommend using them. Their flavor is a great complement to the dill, and they add tangy complexity to this super simple cucumber onion salad.

Add a sprinkle of sea salt, and you’ve got everything you need!

Cucumber onion salad

How to Make Cucumber Salad

This recipe is easy to toss together. Here’s all you need to do:

  1. First, add the sliced English cucumbers and onion to a large bowl along with the honey, rice vinegar, sesame oil, salt, and fresh dill. Toss it all together and put the bowl in the fridge to chill for 10 minutes.
  2. After the mixture has chilled, transfer it to a serving dish, leaving behind any excess liquid.
  3. Top the cucumber onion salad with fresh mint leaves and pickled mustard seeds, if you’re using them.
  4. Season to taste and enjoy!

Find the full recipe below!

Sliced cucumbers and red onion in a bowl

What to Serve with Cucumber Onion Salad

I have a hard time not gobbling up this salad as soon as I toss it together. On the days when it makes it to the dinner table, we love this recipe as a side dish with classic summer picnic fare like veggie burgers, black bean burgers, BBQ sandwiches, portobello mushroom burgers, and corn on the cob. It’s also delicious served with grilled vegetable kabobs and generous dollops of tzatziki.

The sweet rice vinegar & sesame oil dressing makes this cucumber salad recipe a great pairing with Asian flavors as well. Try it as a side with soba noodles, crispy tofu, or banh mi sandwiches. Add a scoop to a watermelon poké bowl, or pair it with sushi, spring rolls, or summer rolls to make a light meal.

Cucumber salad recipe

More Favorite Salad Recipes

If you love this cucumber salad recipe, try one of these summer salads next:

Then, head to this post to find more of my favorite salad recipes!

Cucumber Salad

rate this recipe:
5 from 1 vote
Prep Time: 10 mins
Cook Time: 5 mins
Total Time: 15 mins
Serves 4
This cucumber salad recipe is the perfect side dish for summer cookouts! It's excellent with Asian-inspired meals or classic picnic fare.


  • 2 tablespoons rice vinegar
  • ½ tablespoon agave nectar or honey
  • 1 English cucumber, thinly sliced into rounds
  • cup thinly sliced red onions
  • ½ teaspoon sea salt
  • ¼ teaspoon toasted sesame oil
  • 1 tablespoon chopped dill
  • 1 tablespoon fresh mint leaves
  • Pickled mustard seeds, optional (recipe below)
  • Extra-virgin olive oil, for drizzling, optional

Pickled Mustard Seeds, optional (makes extra)

  • 1/2 cup apple cider vinegar
  • 1/2 cup water
  • 3 tablespoons cane sugar
  • 1/2 teaspoon sea salt
  • 1/3 cup yellow mustard seeds


  • Make the pickled mustard seeds, if using. Combine the vinegar, water, sugar, and salt in a small pot over medium heat. Bring to a simmer, stir in mustard seeds, reduce the heat, and cook over low heat for 30 minutes or until the mustard seeds are plump. Remove from the heat and let cool to room temperature. Store in the refrigerator for up to 2 weeks.
  • Make the salad. In a large bowl, combine the vinegar, agave nectar, cucumber, onion, salt, sesame oil, and dill. Toss to coat and chill for 10 minutes. Transfer to a serving bowl, leaving some of the excess water behind. Top with fresh mint, dollops of pickled mustard seeds, if using, and a drizzle of olive oil, if desired. Season to taste and serve.



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  1. Susan

    A really good cucumber salad is unforgettable. This reminds me of the cucumber salad my Hungarian grandmother used to make – it didn’t have the herbs or sesame oil, and I think she let it marinate for a lot longer. The main flavoring was sweet Hungarian paprika. Now I’m getting hungry…

  2. Carrie

    How long will the pickled mustard seeds stay good for? Any other suggestions of what to do with any leftover seeds?

    • Jeanine Donofrio

      Hi Carrie, they’ll last about a month in the fridge. They’re great on sandwiches (especially grilled cheese), over soft boiled eggs, or served with a cheese board-type platter.

  3. Jessica

    Hi Jeanine,

    Would you use american cucumber, after removing most of the thick skin maybe, instead of the English cucumber? I’ve only found English cucumber wrapped in plastic, which I avoid if possible.

    Thank you!

    • Jeanine Donofrio

      Hi Jessica, that would work! Depending on the size of your cucumbers, you may need 2.

  4. L.. M. Bell


  5. Tracy

    Can this be made the night before?

    • Jeanine Donofrio

      Hi Tracy, the pickled mustard seeds can be made up to a week in advance, but the salad is best made day-of since cucumbers get watery once seasoned with salt. If you wanted to slice the veggies the day before, that would be fine. It would just be a few minutes to toss together same-day.

A food blog with fresh, zesty recipes.
Photograph of Jeanine Donofrio and Jack Mathews in their kitchen

Hello, we're Jeanine and Jack.

We love to eat, travel, cook, and eat some more! We create & photograph vegetarian recipes from our home in Chicago, while our shiba pups eat the kale stems that fall on the kitchen floor.