Crisp, spicy, and delightfully tangy — Korean Cucumber Salad, or Oi Muchim (오이무침), is a quick and refreshing Korean side dish (banchan) that’s as beautiful as it is delicious. This vibrant salad combines crunchy cucumber slices with a zesty mix of Korean red pepper flakes (gochugaru), garlic, sesame oil, and rice vinegar. It’s the perfect balance of spicy, sour, salty, and slightly sweet flavors that bring any Korean meal to life.
In Korean cuisine, banchan (side dishes) are small plates served alongside the main meal. Oi Muchim is one of the most common banchan, known for cutting through rich or spicy flavors with its refreshing acidity. “Muchim” means “to season” or “to mix,” reflecting the traditional method of tossing vegetables in flavorful sauces. Whether you’re serving Korean BBQ, bibimbap, or tofu stew, Oi Muchim brings color, contrast, and balance to your table.
COURSE
Side Dish
ORIGIN
Korean Recipe (South Korea)
WHY THIS DISH IS SO GOOD
This spicy Korean cucumber salad is loved for its crisp texture and bold flavor. It takes just 10 minutes to prepare and pairs beautifully with heavier Korean BBQ dishes or rice bowls. The cucumbers soak up the dressing quickly, giving each bite a burst of garlicky heat and refreshing crunch. It’s an easy, healthy, and flavor-packed dish that fits into any meal prep routine.
INGREDIENTS FOR KOREAN CUCUMBER SALAD (OI MUCHIM)
- Cucumbers: Korean, Persian, or English cucumbers work best for their thin skin and crunch.
- Salt: Draws out excess moisture from cucumbers.
- Garlic: Adds aromatic depth and savory bite.
- Korean red pepper flakes (gochugaru): Brings signature Korean spice and color.
- Soy sauce: Adds umami and saltiness.
- Rice vinegar: Balances the heat with bright acidity.
- Sesame oil: Gives a nutty aroma and smooth finish.
- Sugar: Lightly sweetens and balances the spicy-tangy flavor.
- Green onions: For freshness and mild onion flavor.
- Toasted sesame seeds: Adds crunch and visual appeal.
HOW TO MAKE KOREAN CUCUMBER SALAD (OI MUCHIM)
- Prepare the cucumbers: Slice cucumbers thinly (about 1/8 inch thick) and place them in a bowl. Sprinkle salt evenly and toss. Let sit for 10 minutes to draw out moisture, then gently squeeze and discard excess liquid.
- Make the seasoning: In a mixing bowl, combine minced garlic, gochugaru, soy sauce, rice vinegar, sesame oil, sugar, and green onions. Stir until well combined.
- Toss and mix: Add the drained cucumbers to the seasoning bowl and toss gently to coat evenly.
- Garnish and serve: Sprinkle toasted sesame seeds on top. Serve immediately or chill for 10 minutes before serving for extra crispness.
DIETARY INFORMATION
Oi Muchim is vegan, vegetarian, gluten-free, and dairy-free.
Substitutions:
- To make it lower in sodium, use low-sodium soy sauce or tamari.
- To make it oil-free, omit sesame oil and add a touch more rice vinegar for brightness.
- For a low-calorie version, use less sugar or substitute with a keto-friendly sweetener like erythritol.

Korean Cucumber Salad (Oi Muchim 오이무침)
Ingredients
- 2 Korean or Persian cucumbers or 1 English cucumber
- 1 tsp salt
- 1 clove garlic minced
- 1 tbsp gochugaru Korean red pepper flakes
- 1 tbsp soy sauce
- 1 tbsp rice vinegar
- 1 tsp sesame oil
- 1 tsp sugar
- 1 green onion finely chopped
- 1 tsp toasted sesame seeds
Instructions
- Slice cucumbers thinly and place them in a bowl. Sprinkle salt and toss. Let sit for 10 minutes to release excess moisture, then gently squeeze and discard the liquid.
- In a separate bowl, mix garlic, gochugaru, soy sauce, rice vinegar, sesame oil, sugar, and green onion until combined.
- Add cucumbers and toss gently until evenly coated.
- Garnish with toasted sesame seeds before serving. Serve immediately or chilled.
Notes
RECIPE TIPS
- For extra crunch, refrigerate the cucumbers for 10–15 minutes before seasoning.
- Adjust spiciness by using less or more gochugaru.
- If cucumbers are bitter, lightly peel alternating stripes of skin before slicing.
- Make ahead: You can prep the seasoning up to 2 days in advance and refrigerate. Mix with cucumbers just before serving to keep them crisp.
- Storage: Keep leftovers in an airtight container for up to 2 days; cucumbers may soften slightly but remain flavorful.
SERVING IDEAS
Oi Muchim pairs perfectly with:
- Korean BBQ (like Samgyeopsal or Bulgogi)
- Steamed rice or bibimbap
- Kimchi, japchae, or tofu dishes
- Grilled fish or spicy soups like kimchi jjigae
Did you make this recipe?
Please let me know how it turned out for you! Leave a comment below and tag @wokwithsam on Instagram and hashtag it #wokwithsam.