Spicy Korean Cucumber Salad (Oi Muchim)

Posted on July 6, 2026

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Fresh, crunchy, and packed with bold Korean flavors, Spicy Korean Cucumber Salad, also known as Oi Muchim, is one of the easiest Korean side dishes you can make at home. Crisp cucumbers are tossed in a spicy, tangy, slightly sweet dressing made with Korean chili flakes, garlic, sesame oil, and rice vinegar. It’s ready in just 15 minutes and pairs perfectly with grilled meats, rice bowls, noodles, or Korean BBQ.

Whether you’re looking for a quick summer salad or an authentic Korean banchan, this refreshing cucumber salad is guaranteed to become a favorite.

Why You’ll Love This Recipe

  • Ready in just 15 minutes
  • Crisp, refreshing, and flavorful
  • Naturally vegan
  • Perfect side dish for Korean meals
  • Great for meal prep
  • Easy to customize spice level

Ingredients

  • 2 English cucumbers (or 5 Persian cucumbers)
  • 1 teaspoon salt

Dressing

  • 2 tablespoons Korean chili flakes (Gochugaru)
  • 1 tablespoon rice vinegar
  • 1 tablespoon soy sauce
  • 1 tablespoon sesame oil
  • 1 tablespoon sugar or honey
  • 2 cloves garlic, minced
  • 1 teaspoon sesame seeds
  • 2 green onions, finely sliced

Instructions

Step 1: Slice the Cucumbers

Wash the cucumbers thoroughly and slice them into thin rounds about ¼ inch thick.

Step 2: Salt the Cucumbers

Place the cucumber slices in a bowl and sprinkle with salt.

Let them sit for 10–15 minutes to remove excess moisture.

Drain the liquid and gently squeeze the cucumbers with your hands. Pat dry using paper towels.

Step 3: Prepare the Dressing

In a mixing bowl combine:

  • Gochugaru
  • Rice vinegar
  • Soy sauce
  • Sesame oil
  • Sugar
  • Garlic
  • Sesame seeds
  • Green onions

Mix until well combined.

Step 4: Toss Everything Together

Add the drained cucumbers to the dressing.

Mix gently until every slice is evenly coated.

Step 5: Chill & Serve

Serve immediately for maximum crunch or refrigerate for 20–30 minutes for even better flavor.

Garnish with extra sesame seeds and sliced green onions before serving.

Tips for the Best Korean Cucumber Salad

  • Use English or Persian cucumbers because they have fewer seeds.
  • Don’t skip salting the cucumbers—it keeps them crunchy.
  • Adjust the amount of gochugaru depending on your spice preference.
  • Fresh garlic makes a huge difference.
  • Serve chilled for the freshest taste.

Variations

Less Spicy

Reduce the gochugaru by half.

Extra Crunchy

Add thinly sliced carrots or radishes.

Sweeter Version

Add an extra teaspoon of honey.

Gluten-Free

Use tamari instead of soy sauce.

Storage

Store leftovers in an airtight container in the refrigerator for up to 2 days.

The cucumbers release water over time, so this salad is best enjoyed fresh.

What to Serve With

This salad pairs wonderfully with:

  • Korean BBQ
  • Bibimbap
  • Grilled chicken
  • Fried rice
  • Bulgogi
  • Kimchi fried rice
  • Steamed rice
  • Noodle bowls

Frequently Asked Questions

Can I make it ahead of time?

Yes, but it’s best enjoyed within 24 hours for maximum crunch.

Can I use regular cucumbers?

Yes. Peel them if the skin is thick and remove large seeds if necessary.

Is Korean cucumber salad spicy?

It has a mild to medium heat level. Simply reduce the gochugaru for a milder version.

Can I make it vegan?

Yes! This recipe is naturally vegan if you use sugar instead of honey.