Cubed cucumber kimchi – 30Min Quick Kimchi Recipe

cubed cucumber kimchi with chili and garlic
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Cubed cucumber kimchi (Oil Kkakdugi) is a traditional Korean cucumber side dish of crisp cucumber cubes, salted and tossed in a bold paste of gochugaru, garlic, plum syrup, and anchovy fish sauce, ready in under 30 minutes with no fermentation needed. Total time: 30 minutes. Serves 4. 47 kcal(per serv). Unlike sliced oi kimchi, the cube cut gives every piece a satisfying bite and lets the seasoning cling to all four sides, making this the most flavorful version of cucumber kimchi you can make at home.

Cubed cucumber kimchi with chopsticks resting on the the bowl
Cubed cucumber kimchi: ready in 30 minutes. No fermentation required.

A Spring Ritual, Written in My DNA

Every spring, my mom would make this cubed cucumber kimchi and something in my DNA still remembers it. The moment the season turns, I find myself craving it before I even realize why. One bowl of rice, this kimchi, nothing else. That was enough. That was everything.

Korean cucumber side dish ready in 30 minutes
Crispy. Juicy. Punchy. Three words for this cubed cucumber kimchi.

What Is Cubed Cucumber Kimchi?

Cubed cucumber kimchi is called oi kkakdugi (오이 깍두기) in Korean. The word kkakdugi refers specifically to a cube-cut style of kimchi, most famously made with radish. Applied to cucumber, it creates a lighter, faster version that captures the same bold kimchi flavor in a fraction of the time. This is a distinctly different dish from regular oi kimchi, which is usually made with sliced or stuffed cucumbers. The cube cut is what makes this korean cucumber side dish so special, each piece stays crispy and juicy.

Cubed cucumber kimchi in a wooden bowl with sesame seeds and sliced red chili
A korean cucumber side dish that fits into any meal.

Oi Kkakdugi vs. Oi Kimchi: What’s the Difference?

Both are cucumber kimchi but the cut changes everything. Regular oi kimchi is typically made with half-moon slices, coins and cylinder shapes stuffed with vegetables, called oi sobagi. Cubed cucumber kimchi is different. You cut it chunky, toss it in the paste, and you’re done. No careful slicing, no stuffing, no fuss, just bold, crispy, juicy bites. It’s honestly the easiest kimchi recipe you can make with cucumber.

Why This Quick Kimchi Recipe Skips Long Fermentation

This is a quick cucumber kimchi you can serve the same day. While traditional napa cabbage kimchi ferments for weeks or even months, cucumber kimchi is meant to be eaten fresh and this cubed cucumber kimchi is at its absolute best within two days.

Bright red cubed cucumber kimchi close-up showing gochugaru coating
A wellness banchan under 50 calories, rich in vitamin C, and deeply satisfying.

Why This Korean Cucumber Side Dish Is a Wellness Win

Cucumber is 95% water, naturally low in calories, and rich in vitamin K and C. Its high water content also makes it one of the best foods for skin hydration. Combined with gochugaru, which contains capsaicin, linked to metabolism and circulation support, and maesil cheong (Korean green plum syrup, a traditional digestive aid), it’s easy to see why this cubed cucumber kimchi earns its place as a wellness banchan.

The anchovy fish sauce adds umami while providing naturally occurring amino acids. The garlic adds a prebiotic boost. Every ingredient in this quick kimchi recipe has a reason to be there.

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Oi kkakdugi garnished with red chili slices
My mom made this Korean cucumber side dish every spring. Now I make it every spring too.

Ingredients you’ll need

For Salting the Cucumber

  • 1 cucumber
  • 0.5 tbsp coarse sea salt
  • 0.5 tbsp sugar

For the Kimchi Paste

  • 1.5 tbsp gochugaru: Korean red pepper flakes.
  • 0.5 tbsp minced garlic: fresh is essential.
  • 0.5 tbsp maesil cheong: Korean green plum syrup. Adds gentle sweetness and natural acidity. Sub: a small drizzle of honey + a few drops of lemon juice.
  • 1 tbsp anchovy fish sauce (myeolchi aekjeot): gives deep umami to Korean cucumber side dish.
  • 1/4 stalk green onion, finely sliced: used here instead of hard-to-find buchu (garlic chives).

Optional Toppings

  • 1 tsp sesame seeds: adds a nutty finish and visual texture.
  • 2 red chili peppers, sliced: for extra color and mild heat.
Flat lay of all cubed cucumber kimchi ingredients on white background
Cucumber kimchi paste without Gochujang.

Substitutions

  • Maesil cheong: A small drizzle of honey plus a few drops of lemon juice works.
  • Anchovy fish sauce: Any fish sauce you have or soy sauce as a vegan swap.
  • Green onion → Buchu (garlic chives) : Green onion is the substitute here. The original recipe calls for Buchu (garlic chives), which is harder to find outside Korea. If you can get your hands on it, use buchu, cut into 2–3 cm lengths.
Spring kimchi with cucumber
The simplest quick kimchi recipe with cucumber.

How to Make Cubed Cucumber Kimchi

Step 1. Wash and Prep the Cucumber

Wash the cucumbe. If it has prickles, scrub the skin with coarse salt or scrape with a knife. Cut off both ends.

Step 2. Cut Into Cubes and Salt

Divide the cucumber into 3 equal sections. Halve each section lengthwise and scoop out the seeds with a spoon. Cut each half into bite-sized cubes, roughly 2 cm (¾ inch). Add to a bowl, toss with coarse sea salt and sugar, and set aside for 20 minutes.

Step 3. Prep the Aromatics While You Wait

Finely slice the green onion and mince the garlic. Because we’re using green onion in place of Buchu, cutting it small is key.

Step 4. Coat With Gochugaru First

Drain and discard the liquid the cucumber has released. Do not rinse. Transfer the cubes to a mixing bowl. Add the gochugaru first and toss until every cube is evenly coated.

Step 5. Add Seasonings and Fold In Green Onion

Add the minced garlic, maesil cheong, and anchovy fish sauce. Toss everything together until well combined. Finally, add the sliced green onion and fold in gently.

Step 6. Finish and Serve

Scatter sesame seeds and sliced red chili on top. Serve immediately for maximum crunch, or leave it at room temperature for 2 hours before refrigerating. The flavors settle and deepen beautifully overnight.

Quick kimchi recipe result, glossy cucumber cubes with garlic and green onion
No long fermentation. No careful slicing. Just cut it chunky, toss it in the paste, and you’re done.

Tips & Common Mistakes

Why Is My Cubed Cucumber Kimchi Watery?

The most common mistake is skipping the salting step. Salt draws excess moisture out of the cucumber.

Why Coat With Gochugaru Before the Wet Ingredients?

Adding gochugaru first lets the dry flakes adhere directly to the cucumber surface.

Can I Skip the Fish Sauce?

use soy sauce. The result is less complex, but still good as a vegan-friendly korean cucumber side dish.

How to Store Cubed Cucumber Kimchi

How Long Does It Keep in the Fridge? tore in an airtight glass jar in the refrigerator for up to 5–7 days. Cubed cucumber kimchi is at its best within the first 2–3 days.

Korean cubed cucumber kimchi with visible green onion and sesame seeds
Cubed cucumber kimchi in is meal prep done the Korean way.

What to Serve With This Korean Cucumber Side Dish

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FAQ

Yes but the heat is fully adjustable. All the spice comes from the gochugaru. Start with 1 tbsp for a milder version.

Yes. Replace the anchovy fish sauce with an equal amount of soy sauce or a vegan fish sauce alternative. The umami depth is lighter.

No. This is a quick kimchi recipe designed to be eaten immediately. If you refrigerate it overnight, the flavors meld and deepen noticeably.

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Finished cubed cucumber kimchi in a wooden plate
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By Blonde Kimchi

Quick Cubed cucumber kimchi

This cubed cucumber kimchi is the quickest korean cucumber side dish. No fermentation, no fuss , just crispy, juicy cucumber cubes tossed in a gochugaru paste with garlic, plum syrup, and anchovy fish sauce. Ready in 30 minutes.
Course: Side Dish
Cuisine: Korean
Keyword: diet, gochugaru, healthy, mom’s recipe, spicy, Spring, Under 30 Minutes
Mood: Refreshing
Difficulty: Easy
Prep Time:20 minutes
Cook Time:10 minutes
Total Time:30 minutes
Servings: 4 servings
Calories: 47kcal

Ingredients

  • 1 cucumber
  • 0.5 tbsp coarse sea salt
  • 0.5 tbsp sugar

Cucumber Kimchi Paste

  • 1.5 tbsp Gochugaru Korean red pepper flakes
  • 0.5 tbsp minced garlic
  • 0.5 tbsp Maesil Cheong Korean green plum syrup. If you don't have it, use a small drizzle of honey plus a few drops of lemon juice.
  • 1 tbsp anchovy fish sauce Korean Myeolchi Aekjeot
  • 1/4 stalk green onion Used here instead of hard-to-find buchu (garlic chives)

Optional Toppings

Instructions

  • Wash the cucumber. Scrub or scrape off any prickles. Cut off both ends.
    Divide into 3 sections. Halve each lengthwise
    1 cucumber
    halve the cucumber for cubed cucumber kimchi called oil kkakdugi
  • Remove seeds.
    remove the cucumber seeds for cubed cucumber kimchi
  • Cut into bite-sized cubes.
    Cucumber cut into bite-sized cubes before salting for oi kkakdugi
  • Toss with coarse sea salt and sugar. Rest for 20 minutes. Don' skip this process.
    0.5 tbsp coarse sea salt, 0.5 tbsp sugar
    Cubed cucumber tossed with coarse sea salt and sugar in a mixing bowl
  • While waiting, finely slice the green onion and mince the garlic.
    1/4 stalk green onion, 0.5 tbsp minced garlic
    sliced green onion instead of garlic chives
  • Green onion is the substitute here, not the other way around. The original recipe actually calls for buchu (garlic chives), which is harder to find outside Korea. If you can get your hands on it, use buchu, cut into 2–3 cm lengths.
  • Drain and discard the liquid. Do not rinse. Transfer to a mixing bowl.
    Liquid released from salted cucumber cubes being drained before seasoning
  • Add gochugaru first. Toss until every cube is coated.
    1.5 tbsp Gochugaru
    Gochugaru being added to cucumber cubes before wet ingredients
  • Add minced garlic, maesil cheong, and anchovy fish sauce. Toss to combine.
    0.5 tbsp minced garlic, 0.5 tbsp Maesil Cheong, 1 tbsp anchovy fish sauce
    Cucumber cubes evenly coated in red gochugaru paste in a mixing bowl
  • Fold in sliced green onion gently.
    1/4 stalk green onion
    Sliced green onion folded into cubed cucumber kimchi mixture
  • Top with sesame seeds and sliced red chili. You can serve immediately or refrigerate and eat it within 3 days.
    1 tsp sesame seeds, 2 red chili peppers
    Overhead shot of cubed cucumber kimchi with sesame seeds on linen background

Notes

  • No rinsing after salting
  • Gochugaru first – coating before wet ingredients.
  • Storage: Airtight glass jar, fridge, up to 5 days. Best within 2–3 days.
  • Vegan swap: Replace fish sauce with 1 tbsp soy sauce.
  • Green onion note: Used here instead of hard-to-find buchu (garlic chives). 

Nutrition

Calories: 47kcal | Carbohydrates: 9g | Protein: 2g | Fat: 1g | Saturated Fat: 0.1g | Polyunsaturated Fat: 0.4g | Monounsaturated Fat: 0.2g | Sodium: 1298mg | Potassium: 256mg | Fiber: 2g | Sugar: 6g | Vitamin A: 1179IU | Vitamin C: 35mg | Calcium: 34mg | Iron: 1mg
Nutrition info is an estimate provided by an online calculator. It should not be considered a substitute for a professional nutritionist’s advice.

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