Fresh Homemade Cucumber Onion Salad

By Stephanie Manley Updated 12/15/25

Every summer as a child, I’d help my grandmother harvest cucumbers from her sprawling garden. Her hands, weathered from decades of gardening, would skillfully slice the fresh cucumbers while telling me stories of her childhood. The sharp vinegar scent would fill her kitchen as she prepared this simple salad that appeared at nearly every family dinner. Years later, when I planted my first garden, this cucumber onion salad was the inaugural dish I prepared from my harvest. The crisp, cooling crunch paired with the sweet-tangy dressing instantly transported me back to Grandma’s kitchen. This humble side dish carries not just flavors but generations of family memories, and now I’m sharing it with you.

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overhead view of cucumber onion salad in a bowl

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Homemade cucumber and onion salad

The science behind this salad’s success lies in the perfect balance between the crisp water content of cucumbers and the acidic dressing. The vinegar actually changes the cellular structure of the vegetables slightly, creating a light pickling effect that enhances flavor while maintaining texture. When properly prepared by removing excess water first, the cucumbers absorb just enough dressing to become flavorful without becoming soggy. The small amount of sugar in the dressing balances the acidity of the vinegar while the oil helps carry the flavors and adhere them to the vegetables, creating a perfect harmony in each bite.

Recipe Ingredients

This cucumber salad is perfect to make during the summer.

  • Cucumbers – You can use cucumbers from your garden, the farmer’s market, or even the grocery store. This recipe is so basic that you can make it with any type of cucumber.
  • Onion – There are many different onions you can try. Sweet onion, red onion, or white onion are my favorites. I tend to find the yellow onion to be a little hotter.
  • Vinegar – I recommend white vinegar but you can also use apple cider vinegar.
  • Sugar – For a little sweetness to balance the vinegar tang.
  • Vegetable oil – So the flavors carry through the whole salad.
  • Salt and Pepper – for a little seasoning.
cucumber onion salad ingredients

How to make cucumber onion salad

  1. Slice the cucumbers and onions. I like to slice them about 1/4-inch thick. You can use a sharp knife or a mandolin.
  2. Make the sweet and tangy dressing. You will combine oil, vinegar, sugar, salt, and black pepper.
  3. Pour the dressing over the cut cucumbers and onions.
  4. The flavor blooms if you cover the dish and place it in the refrigerator for a few hours before you are ready to serve.
Making cucumber onion salad.

Variations on this vinegar cucumber onion salad

If you find this cucumber and onion salad is too sweet for your taste, add the sugar slowly and stop when you are satisfied. You can also choose to sweeten with a non-sugar sweetener, such as Stevia, if you desire.

Here are a few different ways to serve this classic dish:

  • Let the cucumbers sit in the vinegar mixture for about 12 hours, drain, and then combine with sour cream to make a creamy cucumber salad.
  • Add a teaspoon or two of fresh dill to bring out the bright flavors. (Basil, parsley, and mint also go well with this salad)
  • Add a few sliced carrots or daikon radish for variety.
  • Increase the nutrition by adding white beans, tomatoes, or red peppers.
cucumber onion salad on a plate

🧊 Storage & Serving Notes

  • Refrigerator Storage: Store in an airtight container for up to 7 days
  • Draining Option: Drain excess liquid for longer storage or crisper texture
  • Flavor Development: Best after 24 hours as flavors meld
  • Serving: Always serve chilled for optimal texture and flavor

Love cucumbers and pickles? Try these recipes!

Favorite Salad Side Dish Recipes

Check out my easy salad recipes and the best side dish recipes here on CopyKat!

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Classic Cucumber Onion Salad

This classic cucumber onion salad is crisp, refreshing, and tossed in a sweet vinegar dressing. A simple summer side dish made in minutes
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5 from 16 votes
Servings : 10
Prep Time15 minutes
Total Time15 minutes

Ingredients
 

  • 1 1/2 pounds thinly sliced cucumbers
  • 1/2 cup thinly sliced onion
  • 1 cup sugar
  • 1 cup white vinegar
  • 1 teaspoon vegetable oil
  • 1/2 teaspoon salt
  • 1/4 teaspoon pepper

Instructions

  1. Place sliced cucumbers and onions into a bowl.
  2. In another bowl, whisk sugar, vinegar, vegetable oil, salt, and pepper to combine.
  3. Pour the dressing over the cucumbers and onions.
  4. Refrigerate a couple of hours before serving.

Video

Notes

Store cucumber onion salad in an air-tight container in the refrigerator.
The salad will keep for a week in the refrigerator.

Nutrition

Calories: 160kcal | Carbohydrates: 36g | Protein: 0g | Fat: 0g | Saturated Fat: 0g | Cholesterol: 0mg | Sodium: 198mg | Potassium: 170mg | Fiber: 0g | Sugar: 35g | Vitamin A: 80IU | Vitamin C: 4.3mg | Calcium: 21mg | Iron: 0.3mg
Tried This Recipe?Leave a comment and rating to let people know how you liked it! Tag me on Instagram @copykatrecipes
Course: Salad
Cuisine: American
cucumber onion salad in a black bowl

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5 from 16 votes (10 ratings without comment)

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Recipe Rating




12 Comments

  1. 5 stars
    This is the best Cucumber & Onion Salad I’ve found. Since finding this recipe a month or two ago, I have made it at least five times. I took it to a summer pot luck and have had multiple requests for the recipe. The only change I made was to peel the cucumbers and score them with a fork to give them a nicer appearance.

  2. I was looking for a copycat recipe of Biaggis cuke salad. Theirs has a kick to it but there is no evidence of pepper flakes or chili in what is served. Any idea what they use to give it heat?

  3. 5 stars
    I have been making this forever, but I always peel the cucumbers first. I do this because I make cucumber sandwiches out of the salad…. thoroughly butter two pieces of white or wheat bread, add cucumbers and onions and enjoy! So yummy!

  4. 5 stars
    Just was wondering if I could can this recipe? Can you let me know what your thoughts are on this?

    Thank you
    Very good recipe for cucumber onioon salad.

    1. I think if you can these, they would be pickles. I would use a recipe for pickles instead of this, as recipes created for canning tend to have specific ratios of acid to help ensure the food is safe to eat.

  5. A single guy who has never purchased a cucumber in my life (70 yrs.). Made this recipe exactly using balsamic vinegar. Simply delicious and easy.
    Thank you, Rog.

  6. 5 stars
    I love cucumber salad but the amount of sugar is way too much. If it is too sweet for you as well try less and less sugar till you are satisfied.

    1. That is one of the beauties of cooking, you can always adjust a recipe to your personal taste. I have learned there is no arguing taste, you just enjoy what you enjoy.