Oi muchim is a mildly spicy cucumber salad with ground Korean red pepper (gochugaru), commonly served as a Korean side dish, called banchan. The crunchy, fresh cucumbers and just a simple, spicy, savory mixture make this Korean cucumber salad super crisp, refreshing, healthy, and quick to make. Oi muchim is especially good when you need something fresh to balance grilled meats and rich proteins.
I expect to have Korean spicy cucumber salad whenever I am having KBBQ with banchan (a spread of Korean side dishes).
I’ve had oi muchim more times than I have actually eaten plain cucumbers, really. I much prefer it!
You know that spiral spicy cucumber salad on TikTok that people are raving about, well you don’t need to do any fancy cuts here… and this is the viral recipe.
Oi muchim balances the rich meats, pork belly on the grill, and other proteins… so it makes an ideal side dish. It’s good to get to know what the banchan side dishes are and you’ll see that spicy cucumber salad is an important staple in Korean cuisine.
It’s got the crispy texture, freshness from the cucumber, light vinegar, and the gochugaru is actually very mild spice.
You can add more red pepper powder and that will make it more spicy. (I think I might just be really used to the spicy heat so I like to use a lot)
With that said, you don’t need to be eating Korean food to enjoy oi muchim. It goes well with Asian flavors of grilled meats, short ribs, pork belly, BBQ, and skewers. Usually rice too and other kinds of vegetables.
It’s easily replicated at home and I can satisfy my cravings by making it super fresh, eating it alongside protein meals and even as a zesty, healthy snack.
The mixture dressing in this oi muchim (hello capsaicin!) leads me to eat what feels like a beach bucket full of cucumbers. My skin feels glowing, my lips feel a bit on fire, and my meals are complete.
Let’s go!
Why You’ll Love This Recipe
- Crisp and refreshing: Salting the cucumbers helps remove excess water while keeping them crunchy.
- Just Mildly Spicy, a tiny bit tangy, and savory: Gochugaru, garlic, and rice vinegar create a bold dressing… but it’s mild in spicy and just light on the vinegar. You can make a modern Korean spicy cucumber salad by adding a little gochujang paste for umami and more kick.
- Ready in about 30 minutes: Most of that time is waiting for the cucumbers to release water. The remaining steps is just to toss everything together. Once you get it, you won’t even need to measure everything.
- Easy to adjust: Make it milder, spicier, sweeter, or more tangy to suit your taste.
- Perfect with Korean and many Asian foods: Serve it with rice, bulgogi, Korean barbecue or any Asian BBQ flanken-cut ribs, baby back ribs, bibimbap, or other banchan.
- Naturally vegan recipe: The dressing uses simple pantry ingredients and a little sweetener.
- Leftovers are Good: The mixture absorbs well into the cucumber, allowing leftovers to be bold and tasty for up to 3 days max. You can make this the night before a dinner party if you needed to.
What Is Oi Muchim?
Oi muchim (오이무침) is a Korean spicy cucumber salad, seasoned using gochugaru which is Korean red pepper. Oi means cucumber and muchim means mixing/seasoning/tossing ingredients without heat.
It’s a popular Korean side dish, or banchan, that brings a fresh, crunchy contrast to rich, fatty, oily, and savory meals.
Many versions of this salad dish use gochugaru, garlic, vinegar, sesame oil, sesame seeds, and other seasonings. Some are more tangy, while others lean sweeter or spicier.
I think that’s the beauty of this recipe, you can add a touch more of your favorite element, sweet, tang, or spice.
This recipe uses gochugaru, which is authentic and traditional.
For modern versions and adding some depth of umami and spice, gochujang adds a thicker, savory chili flavor. You can try this as an option.
It’s a simple dish, but the balance matters. You want the cucumbers to stay crisp and taste fresh, not get buried under a heavy sauce.
How Spicy Is Korean Cucumber Salad?
This version has a moderate spicy kick, balanced by rice vinegar and a little sweetness.
To adjust the spice:
- Mild: Reduce the gochugaru to ½ tablespoon.
- Medium: Use the recipe as written.
- Spicy: Increase the gochugaru to 2 more teaspoons or more, depending on your tolerance, BUT keep in mind that gochugaru is not that spicy to begin with.
- Extra tangy: Add a teaspoon of white vinegar.
- Slightly sweeter: Add a little more honey, agave, or sugar.
What Cucumbers to use for Oi Muchim?
The best cucumbers for oi muchim are Korean cucumbers, Japanese, Persian cucumbers, or basically… any small cucumbers.
Look for cucumbers with thin skins, small seeds, and firm flesh.
They should “crisp and crunch” if you were to break one in half. The inside, tender, and the skin shouldn’t need peeling.
- Korean cucumbers: A traditional option with a fresh flavor and crisp texture. They’re often longer and have a slightly different shape from Persian cucumbers.
- Persian or Japanese cucumbers: My go-to choice. They’re small, crunchy, and easy to slice into bite-sized rounds. You usually don’t need to peel them or remove the seeds. They are sold in tons of markets. You can easily “smash” them too or cut them in spirals.
- Regular garden cucumbers: These and English cucumbers are my least choice for this. These work in a pinch, but their thicker skins and larger seeds can make the salad more watery. Peel them if the skin is tough, and scoop out the seeds if they’re especially large.
How do I cut cucumbers for Korean cucumber salad?
Cut the cucumbers in rounds and about a quarter inch in thickness. Too thin, they wilt down faster. Too thick, not an even ratio of gochugaru sauce and the cucumber.
They need to have firmness and crisp.
You can also smash them, spiral them, or cut them lengthwise. Just be sure there is enough sauce to coat the cucumbers and also that the cucumber doesn’t become soggy and too flexible.
Ingredients
- 2 pound (450 g) small cucumbers: Small, thin-skinned cucumbers are ideal because they’re crunchy, have relatively small seeds, and don’t need to be peeled. The size, texture, crisp, and color all make a difference in a good oi munchim, so I highly recommend sticking to these small cucumbers (Korean, Japanese, Persian…) smaller cucumbers.
- 1 teaspoon coarse salt: Korean coarse sea salt is great, but coarse sea salt works well if you can’t access Korean rock salt or coarse salt. Use it to draw out excess moisture before dressing the cucumbers.
- This is a traditional Korean step to get the cucumbers crisp and avoid watery or soggy salad.
gochugaru MIxture
- 1 tablespoon gochugaru: Korean red pepper flakes for the signature heat and color. Adjust to taste. You can use coarse or powder Korean red pepper flakes.
- 2 tablespoons rice vinegar: Adds a clean, tangy, slightly sweet flavor that balances the chili paste. You can use regular rice vinegar and control the sweetness better. Seasoned rice vinegar is more sweet.
- 2 garlic clove, finely minced: Adds a fresh, aromatic, bold bite.
- 1-2 teaspoon honey, agave, or sugar: Softens the acidity and chili heat without making the salad too sweet. This is not a sweet-forward salad so do not add too much.
- 1/4 teaspoon sesame oil: Sesame oil can be overpowering so do not add too much.
- 3 tablespoons green onion, thinly sliced: Adds a fresh, mild onion flavor.
- 1 teaspoon toasted sesame seeds: Adds a nutty finish and a little texture.
Kitchen Tools Needed
- Cutting board
- Sharp knife
- Measuring spoons
- Colander or strainer
- Paper towels or a clean kitchen towel
- Small bowl for mixing the dressing
- Large mixing bowl for tossing the cucumbers
- Spoon or small whisk
- Food safe gloves for mixing
How to Make Oi Muchim Spicy Korean Cucumber Salad
- Slice the cucumbers. Wash and dry the cucumbers. Trim the ends, then slice them into rounds about ¼ inch thick. Try to keep the slices fairly even so they salt and season at the same rate.
- Salt the cucumbers. Place the slices in a large bowl, sprinkle with 1 teaspoon coarse salt, and toss well. Let them sit for 15 minutes. The salt will draw moisture out of the cucumbers and help preserve their crunch.
- Rinse and dry. Quickly rinse the cucumbers under cold water to remove excess salt. Do not squeeze the cucumbers. Drain well, then pat them thoroughly dry with paper towels. This step is important: excess water can dilute the dressing and make the salad watery.
- Mix the dressing. In a small bowl, combine the rice vinegar, gochugaru, minced garlic, and sugar. Stir until the mixture is evenly combined and the sweetener has dissolved. Taste and adjust the balance before adding it to the cucumbers.
- Dress the cucumbers. Transfer the dried cucumber slices to a clean mixing bowl. Add the gochugaru mixture and toss by hand (preferably with food gloves on) until every slice is lightly coated. Start with the full amount, then adjust to your preference if needed.
- Add the remaining ingredients. Sprinkle the sesame oil, thinly sliced green onion, and toasted sesame seeds over the salad. Toss gently once more. Taste and add any additional salt to your preference.
- Chill and Serve. Chill for fifteen minutes before serving so the salad can get cold and flavors meld together. Serve as banchan with rice, Korean barbecue, grilled chicken, beef, fish, or your favorite proteins.
Step by Step Images
Follow the pictures for how to make oi muchim.
Best Tips
- Use Korean or other small cucumbers. They’re usually crisp, tender-skinned, and less watery than large English slicing cucumbers. You could use any cucumber, but the small ones are the best and usually available at every major grocery.
- Don’t skip salting. Fifteen minutes gives the cucumbers time to release excess moisture before you add the dressing. It helps make the salad crispy and not soggy.
- Dry the cucumbers well. Rinsing removes excess salt, but leftover water can thin out the sauce. Pat the slices more dry rather than just letting them drain.
- Mix the sauce separately. This helps distribute the thick gochujang evenly instead of leaving concentrated patches of pepper flakes on a few slices.
- Taste before serving. Adjust the vinegar, sweetener, and gochugaru as needed.
- Use toasted sesame seeds. They add a nutty aroma that makes this simple salad taste more complete.
- Don’t overdo the sesame oil. It’s a bold and overpowering flavor for cucumbers so a little goes a long way.
Oi Muchim Add-Ins and Variations
I would keep the cucumbers crisp and the dressing balanced, then add a few extra ingredients depending on what you’re craving.
Easy Add-Ins
- Thinly sliced red onion: Adds savory, acid, and heat depth. Slice it very thin so it doesn’t overpower the cucumbers.
- Shredded carrots: Bring a touch of sweetness, extra crunch, and bright color.
- Extra green onions: Add more fresh, mild onion flavor to the finished salad.
- Thinly sliced fresh chili: Use Korean green chili if you want more heat.
- Honey for sweeter version: Mix a little extra in the pepper paste for a sweeter profile. I like this more than sugar because it dissolves evenly.
- Smashed cucumber salad: Instead of slicing the cucumbers into rounds, lightly smash them with the flat side of a knife or a rolling pin, then cut them into bite-sized pieces. The uneven surfaces catch more dressing, giving every bite plenty of flavor. Salt, rinse, and dry as directed.
What to Serve with Korean Spicy Cucumber Salad
Oi muchim is a classic kind of banchan, and the refreshing crunch and tangy heat make it especially good with rich, savory, fried, or grilled foods.
| Dish | Why it pairs well |
|---|---|
| Bulgogi, Gochujang chicken thighs | Sweet and savory Korean meat dishes balance the spicy, tangy cucumbers. |
| Korean BBQ, Filipino BBQ short ribs | The cool crunch cuts through the richness and fat of grilled meat. |
| Bibimbap or Asian protein bowl | Adds freshness and a spicy crunch to a bowl of rice, vegetables, and protein. |
| Korean Fried chicken, Japanese karaage, crispy panko chicken tenders, fried panko shrimps, chicken wings | The vinegar and cucumber help balance crispy, rich chicken. This is good not just with Korean fried chicken, but almost any fried chicken or fish pairs well. |
| Steamed white rice, kimchi fried rice, or garlic rice, Korean rice balls for bento style lunch box | A simple way to enjoy the flavorful dressing with a comfort staple that softens and carries the flavor. |
| Grilled chicken or salmon, or quick salmon bites and make a rice bowl | An easy fresh side for a weeknight protein dinner. This is a healthy combo! |
| Vegan Japchae | The crisp cucumbers contrast nicely with soft glass noodles. |
| Other banchan | Serve with kimchi, seasoned spinach, bean sprouts, and other small Korean side dishes. |
You don’t need to make an entire Korean feast to enjoy this recipe. A bowl of rice, a protein, and these spicy cucumbers make a simple, satisfying meal.
Storage and Leftovers
- Refrigerator: Keep leftovers in an airtight container for up to 3 days max. The texture is best on the day you make it.
- Make-ahead prep: Salt, rinse, and dry the cucumbers ahead of time. Store them separately from the dressing, then toss everything together before serving.
- Freezer: Not recommended. Frozen and thawed cucumbers lose their crisp texture.
- Serving leftovers: If liquid collects at the bottom of the container, give the salad a gentle toss. The flavor may become more diluted as the cucumbers release water.
FAQs
Is oi muchim the same as Korean cucumber kimchi?
No. Oi muchim is a seasoned cucumber salad that’s typically mixed and served without fermentation. Korean cucumber kimchi, such as oi sobagi, is a different preparation that often involves stuffing cucumbers with a seasoned filling and allowing them to ferment. Both can be spicy and refreshing, but their preparation, taste, and texture differ.
Can I make Korean cucumber salad with gochujang?
Yes. You can add gochujang for a more thick paste, umami, sweeter, and slightly fermented flavor in the seasoning. This is like another variation that you can try with this recipe.
Can I make oi muchim without gochugaru?
No, the flavor will be different and the whole traditional style will be different. Gochugaru adds a signature dried-chili flavor and color that gochujang or other peppers can’t really replace.
Can I use regular vinegar instead of rice vinegar?
Yes, just use white vinegar and add some sugar. It will deliver similar results.
Why do you salt cucumbers before making the Korean cucumber salad?
Cucumbers are mostly water. Salting them for 15 minutes draws out some of that moisture before the mixture paste goes on. Rinsing removes excess salt, and drying the slices helps the dressing stick to the slices.
Do I have to rinse the salted cucumbers?
For this recipe, yes I recommend because it’s a lot of cucumbers and they will be too salty without rinsing. They stay salty even after rinsing so I wouldn’t skip this part.
Can I skip the salting step?
You could, but the salad will be water, diluted, and nothing is going to stick to the slippery cucumber slices. I would not skip it.
Should I peel the cucumbers?
No. The small cucumbers have thin skin and that adds texture, taste, and appearance. Don’t peel them or else the salad will be soggy and not look as appetizing.
Can I make Korean cucumber salad ahead of time?
You can prepare the components ahead, but I recommend combining them not more than a day before serving. Keep the salad very chilled.
How do I keep Korean cucumber salad from getting watery?
Be sure to follow the steps in the recipe card below which includes salting the cucumbers. This removes excess water.
Can I freeze Korean cucumber salad?
No, freezing isn’t recommended. Cucumbers are mostly water so once thawed, you’ll have a mushy mess of a salad. Don’t do it.
This Korean spicy cucumber salad is low cal, clean, easy to make, healthy… and yet, the taste is full of flavor to complement many meals and complete your lunch or dinner setup.
I would recommend it for an Asian feast gathering, or the next time you want to add health and spicy flavor to your next protein meal. Let me know if you try in the comments below!
Oi Muchum (Korean spicy cucumber salad)
Equipment
- sharp knife
- Colander or strainer
- Paper towels or a clean kitchen towel
- Small bowl for mixing the dressing
- Large mixing bowl for tossing the cucumbers
- Spoon or small whisk
- Food safe gloves for mixing
Ingredients
- 2 pounds small cucumbers use Korean, Persian, Japanese, types of small cucumbers
- 1 teaspoon coarse salt Korean coarse salt, rock salt, or coarse sea salt
Gochugaru MIxture
- 1 tablespoon gochugaru
- 2 tablespoons rice vinegar regular (or seasoned for more sweet notes)
- 2 garlic cloves finely minced
- 1 teaspoon sugar or agave or honey
- ¼ teaspoon sesame oil
- 3 tablespoons green onion thinly sliced
- 1 teaspoon toasted sesame seeds
Instructions
- Slice the cucumbers. Wash and dry the cucumbers. Trim the ends, then slice them into rounds about ¼ inch thick. Try to keep the slices fairly even so they salt and season at the same rate.2 pounds small cucumbers
- Salt the cucumbers. Place the slices in a large bowl, sprinkle with 1 teaspoon coarse salt, and toss well. Let them sit for 15 minutes. The salt will draw moisture out of the cucumbers and help preserve their crunch.1 teaspoon coarse salt
- Rinse and dry. Quickly rinse the cucumbers under cold water to remove excess salt. Do not squeeze the cucumbers. Drain well, then pat them thoroughly dry with paper towels. This step is important: excess water can dilute the dressing and make the salad watery.
- Mix the dressing. In a small bowl, combine the rice vinegar, gochugaru, minced garlic, and sugar. Stir until the mixture is evenly combined and the sweetener has dissolved. Taste and adjust the balance before adding it to the cucumbers.1 tablespoon gochugaru, 2 tablespoons rice vinegar, 2 garlic cloves, 1 teaspoon sugar
- Dress the cucumbers. Transfer the dried cucumber slices to a clean mixing bowl. Add the gochugaru mixture and toss by hand (preferably with food gloves on) until every slice is lightly coated. Start with the full amount, then adjust to your preference if needed.
- Add the remaining ingredients. Sprinkle the sesame oil, thinly sliced green onion, and toasted sesame seeds over the salad. Toss gently once more. ***Taste and add any additional salt to your preference.***¼ teaspoon sesame oil, 3 tablespoons green onion, 1 teaspoon toasted sesame seeds
- Chill for ten minutes and then Serve. Serve as banchan with rice, Korean barbecue, grilled chicken, beef, fish, or your favorite proteins.
LEAVE A COMMENT