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Korean spicy cucumber salad (oi muchim) with crispy sliced cucumbers, red gochugaru seasoning, sesame seeds, and green onion on a white plate
Dinner

Korean Spicy Cucumber Salad (Oi Muchim)

Crisp, tangy, and ready in 10 minutes. If you're looking for a quick and flavourful Korean side dish that adds crunch and brightness to any meal, this Korean spicy cucumber salad, or Oi Muchim (오이무침), belongs on your table. Lightly salted cucumber slices tossed in a spicy, garlicky dressing—this is one of the most refreshing and addictive banchan you can make.

Prep
10 min
Cook
Total
10 min
Serves
4
Style
💰 Everyday

Ingredients

Servings:
4
  • 1 English cucumber
  • ¾ teaspoon salt (for drawing out water)
  • ¾ teaspoon gochugaru (Korean red pepper flakes), or more to taste
  • 1 teaspoon sugar
  • 1½ teaspoons rice vinegar
  • 1½ teaspoons soy sauce
  • 1 clove garlic, minced or grated
  • 1 teaspoon toasted sesame oil
  • ½ teaspoon toasted sesame seeds
  • Optional: 1 green onion, finely sliced

Instructions

  1. 1

    Peel in stripes or fully (optional): The skin is edible but thicker. Peeling in stripes keeps some texture while softening the chew.

  2. 2

    Slice cucumbers thinly and salt: Slice the cucumbers thinly (about ⅛ inch/3mm) and toss them with salt. Let sit for 10 minutes to draw out the moisture. Gently squeeze out the excess liquid and drain well. In a bowl, combine the gochugaru, sugar, vinegar, soy sauce, garlic, sesame oil, and sesame seeds. Mix well.

  3. 3

    Toss and serve: Add the drained cucumbers and green onion (if using) to the bowl. Toss gently until well coated. Taste and adjust the seasoning if needed.

  4. 4

    Serve: Serve immediately for a fresh, crisp texture, or refrigerate for 15–30 minutes to let the flavours meld.

FAQ

Can I make Korean spicy cucumber salad ahead of time?+
Yes, you can make it up to 1–2 days in advance and store it in an airtight container in the fridge. The flavors actually deepen as it sits, but drain any excess liquid before serving to keep it from getting soggy.
What can I substitute for gochugaru in this recipe?+
You can use cayenne pepper or red pepper powder if you can't find gochugaru, though the flavor will be slightly different—start with ½ teaspoon since cayenne is often hotter and adjust to taste.
Why is my cucumber salad watery?+
You likely didn't squeeze out enough moisture after salting, or you added the dressing too early. Make sure to salt the sliced cucumbers for the full 10 minutes, then gently squeeze them dry in a clean kitchen towel before dressing.
What should I serve with Korean spicy cucumber salad?+
It's the perfect cooling banchan alongside Korean BBQ, bibimbap, spicy tofu dishes, or rice bowls—basically any meal where you want a refreshing, crisp contrast to richer or spicier flavors.

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Korean Spicy Cucumber Salad (Oi Muchim) | Food 400°