A crisp, lightly spicy Korean cucumber salad that comes together in minutes — thinly sliced cucumbers tossed with rice vinegar, soy, sesame oil and a hit of red pepper flakes. It’s the kind of bright, crunchy side that lifts heavy mains, refreshes summer barbecues, and finishes quicker than you can set the table. If you like quick, bold condiments alongside this salad, try my easy barbecue sauce from jelly for a contrasting sweet‑smoky dip.
Why you’ll love this dish
This cucumber salad is fast, forgiving, and endlessly adaptable. It’s keto‑friendly, budget‑wise (two large cucumbers go a long way), and kid‑approved when you skip or tone down the red pepper flakes. Because it’s served chilled, it’s perfect for weeknight dinners, potlucks, and as a palate‑cleansing side next to richer Korean dishes.
“Light, tangy, and addictive — makes dinner feel restaurant‑level in five minutes.” — home cook review
Beyond flavor, this salad scores on texture and timing: the quick salting step removes excess water so the dressing stays glossy and bright instead of diluted.
How this recipe comes together
No cooking, just quick prep. First you salt thin cucumber slices briefly to draw out moisture. While they sit, whisk a simple dressing of rice vinegar, soy, sesame oil and a touch of sugar. Rinse and dry the cucumbers, toss with chopped green onions and the dressing, then garnish with sesame seeds. Total active time: about 10 minutes; passive time while cucumbers drain: 15 minutes.
What you’ll need
- 2 large cucumbers — English or Persian cucumbers work best for thin, tender skins.
- 1 tablespoon kosher or table salt (for drawing moisture)
- 3 green onions, thinly sliced
- 2 tablespoons rice vinegar (milder and slightly sweet compared to white vinegar)
- 1 tablespoon soy sauce (low-sodium is fine)
- 1 tablespoon sesame oil (toasted sesame oil for the classic aroma)
- 1 teaspoon sugar (balances the acidity; honey or maple syrup can substitute)
- 1 teaspoon red pepper flakes (optional; go lighter for kids)
- Sesame seeds for garnish
Ingredient notes: If you prefer less sodium, reduce the soy sauce to 1/2 tablespoon and add a pinch more sugar for balance. For a gluten-free version, use tamari instead of soy sauce.
Step-by-step instructions
- Wash cucumbers and slice them very thinly (about 1/8 inch). A mandoline or sharp chef’s knife works well.
- Place cucumber slices in a colander, sprinkle evenly with 1 tablespoon salt, and toss. Let sit 15 minutes to draw out excess water.
- While cucumbers rest, whisk together 2 tablespoons rice vinegar, 1 tablespoon soy sauce, 1 tablespoon sesame oil, 1 teaspoon sugar, and 1 teaspoon red pepper flakes (if using) in a small bowl. Taste and adjust — a little more vinegar for tang, more sugar if too sharp.
- Rinse the cucumbers under cold water to remove excess salt, then drain thoroughly and pat dry with paper towels or a clean kitchen towel. Removing as much moisture as possible keeps the dressing from diluting.
- In a large bowl, combine the cucumbers and 3 sliced green onions. Pour the dressing over the salad and toss gently until evenly coated.
- Transfer to a serving bowl, sprinkle with sesame seeds, and chill at least 10 minutes before serving for the flavors to meld.
How to plate and pair
Serve this salad chilled in a shallow bowl so the dressing is distributed evenly. For a casual family meal, make it the cool counterpoint to grilled meats or fried foods. For parties, present in a small individual dish garnished with extra sesame seeds and a few julienned scallions.
For a festive spread, pair the cool, spicy cucumber with an eye‑catching Caprese salad Christmas tree — the creamy mozzarella and tomatoes balance the salad’s tang and heat beautifully.
Storage and reheating tips
- Refrigerate in an airtight container. Properly stored, the salad keeps 2–3 days, but texture will soften over time as cucumbers release water.
- Do not freeze — cucumbers become mushy after thawing.
- If storing longer than a few hours, keep dressing and cucumbers separate, then toss just before serving to preserve crispness.
- Food safety: once dressed, keep cold and don’t leave out at room temperature for more than 2 hours.
Pro chef tips
- Salt briefly: 10–15 minutes is enough to pull water and keep slices firm; longer will make them limp.
- Dry thoroughly: blotting with paper towels or a clean cloth prevents soggy dressing.
- Slice thin and uniform: thin slices absorb dressing better and feel lighter on the palate. Use a mandoline for speed and consistency, but always use the safety guard.
- Adjust heat at the end: adding red pepper flakes after tossing preserves their pop; mix them in early for a softer, integrated heat.
- Make it ahead: you can prepare the cucumbers and dressing separately up to 24 hours in advance.
Creative twists
- Garlic & chili: add 1 minced clove of garlic and a teaspoon of gochugaru (Korean chili powder) for a bolder punch.
- Creamy sesame: whisk in 1 tablespoon tahini or plain yogurt for a richer texture.
- Sweet-sour: swap sugar for 1 tablespoon honey and add a splash of lime juice for a sweeter profile.
- Pickled quick version: let the dressed cucumbers sit for several hours to become more pickle‑like and a bit softer.
- Add crunch: top with toasted almonds or crushed roasted seaweed for texture contrast.
Common questions
Q: How long does it take to make this cucumber salad?
A: Active time is about 10 minutes (slicing, whisking, tossing) plus 15 minutes passive time for the salted cucumbers to drain. Plan on 25–30 minutes total.
Q: Can I skip salting the cucumbers?
A: You can, but the salt step removes excess water so the dressing stays flavorful and the cucumbers stay crisp. If you skip it, expect a slightly more watery salad and shorter shelf life.
Q: Is rice vinegar essential? Can I use apple cider or white vinegar?
A: Rice vinegar is milder and slightly sweet, which suits this salad. Apple cider vinegar is a reasonable substitute; use a little less white distilled vinegar because it’s sharper.
Q: Will this keep if I make it the night before?
A: For best texture, store cucumbers and dressing separately overnight and toss before serving. If already dressed, refrigerate and eat within 24–48 hours for best quality.
Q: Is this recipe traditional Korean oi muchim?
A: This is a quick, home‑style cucumber salad inspired by Korean flavors (oi muchim). It’s simplified for speed while keeping key elements like rice vinegar, sesame oil, and gochugaru/red pepper flakes.
Q: How can I make it less spicy for kids?
A: Omit the red pepper flakes or reduce to a pinch. You can also add a little extra sugar or sesame oil to mellow heat.
Korean Cucumber Salad
Ingredients
For the salad
- 2 large cucumbers English or Persian cucumbers work best for thin, tender skins.
- 1 tablespoon kosher or table salt Used for drawing moisture.
- 3 pieces green onions Thinly sliced.
- 2 tablespoons rice vinegar Milder and slightly sweet compared to white vinegar.
- 1 tablespoon soy sauce Low-sodium is fine.
- 1 tablespoon sesame oil Toasted sesame oil for classic aroma.
- 1 teaspoon sugar Balances the acidity, can substitute with honey or maple syrup.
- 1 teaspoon red pepper flakes Optional; reduce for kids.
- to taste sesame seeds For garnish.
Instructions
Preparation
- Wash cucumbers and slice them very thinly (about 1/8 inch). A mandoline or sharp chef's knife works well.
- Place cucumber slices in a colander, sprinkle evenly with 1 tablespoon salt, and toss. Let sit for 15 minutes to draw out excess water.
- While cucumbers rest, whisk together 2 tablespoons rice vinegar, 1 tablespoon soy sauce, 1 tablespoon sesame oil, 1 teaspoon sugar, and 1 teaspoon red pepper flakes (if using) in a small bowl. Taste and adjust as necessary.
- Rinse the cucumbers under cold water to remove excess salt, then drain thoroughly and pat dry with paper towels or a clean kitchen towel.
- In a large bowl, combine the cucumbers and the sliced green onions. Pour the dressing over the salad and toss gently until evenly coated.
- Transfer to a serving bowl, sprinkle with sesame seeds, and chill for at least 10 minutes before serving.