Korean Cucumber Salad

The first time I made this cucumber salad, I was frantically prepping sides for a last minute Korean BBQ night with friends. Someone had already marinated the beef, but we needed something crisp and cooling to balance all that rich, savory meat. I threw this together in ten minutes flat, and it was the first empty dish on the table everyone kept reaching for it between bites of grilled pork belly.

Last summer, my neighbor came over with fresh cucumbers from her garden and I decided to try this recipe with them instead of store bought. The difference was shocking, those garden cucumbers were so much sweeter and crisper that I ended up making three batches in one week because my family could not stop eating them straight from the bowl.

Ingredients

• English or Persian cucumbers: These have thinner skins and fewer seeds than regular cucumbers, which means they stay crunchy longer and do not get waterlogged as quickly
• Gochugaru (Korean red chili flakes): This is non negotiable for authentic flavor, regular red pepper flakes are too sharp and lack the slightly sweet, smoky depth
• Rice vinegar: Provides a gentle acidity that does not overpower the fresh cucumber flavor like white vinegar would
• Toasted sesame oil: Use the toasted kind, not plain sesame oil, it adds that nutty backbone that makes everything taste complete
• Salt: Essential for drawing out excess water from the cucumbers so they stay crunchy and actually absorb the dressing instead of becoming watery

Instructions

Salt the cucumbers:

Toss the sliced cucumbers with salt and let them sit for about 5 minutes. You will see water beads forming on the surface this is exactly what you want, it means the cucumbers are releasing excess moisture.

Squeeze out the liquid:

Gently but firmly squeeze the cucumbers to remove as much water as possible. Do not skip this step or your salad will turn into a soup within ten minutes.

Make the dressing:

Whisk together the gochugaru, soy sauce, rice vinegar, sesame oil, sugar, and garlic until the sugar completely dissolves. The mixture should look like a vibrant red-orange paste.

Toss and coat:

Add the drained cucumbers and sliced green onions to the bowl with the dressing. Use your hands or tongs to toss everything until every cucumber slice is evenly coated in that spicy, glossy sauce.

Finish with sesame seeds:

Sprinkle the toasted sesame seeds over the top right before serving. They add this incredible nutty crunch that makes each bite feel special and complete.

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This salad has become my go to whenever I meal prep for the week because it is one of those rare dishes that actually tastes better the next day. I love grabbing a spoonful straight from the container as a midnight snack when I want something refreshing but full of flavor.

Choosing the Right Cucumbers

Persian cucumbers are my absolute favorite here because they are practically seedless and have such tender, edible skin. English cucumbers work beautifully too, but avoid the thick waxed ones from the regular grocery store. Farmers market cucumbers with thin skins will give you the best crunch and most delicate texture.

Adjusting the Heat Level

I have made this recipe for everyone from my spice loving brother to my mild mannered aunt, and the secret is starting with less gochugaru than you think you need. You can always add more, but you cannot take it back. If you are serving a crowd with different heat tolerances, serve the red pepper flakes on the side and let people customize their own portions.

Make Ahead Strategy

This salad actually develops more depth after the flavors have time to hang out together in the fridge. The cucumbers will release a bit more liquid over time, but that is just part of the charm. I often double the recipe and keep it in a glass container for easy sides throughout the week.

• Store in an airtight container and consume within 2 to 3 days
• Give it a quick toss before serving to redistribute the dressing
• If it seems too watery, add a splash more rice vinegar to brighten it back up

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There is something so satisfying about a recipe that requires zero heat but delivers such bold, complex flavors. I hope this becomes your go to side for everything from weeknight rice bowls to weekend dinner parties.

Recipe Help & Support

→ What is gochugaru and can I substitute it?

Gochugaru are Korean red chili flakes with a smoky-sweet flavor profile. You can substitute with red pepper flakes, though the flavor will differ slightly. Start with half the amount if using regular chili flakes.

→ How long does this salad stay crunchy?

Best enjoyed fresh within a few hours for maximum crunch. It will keep refrigerated for up to 2 days, though the cucumbers will release water and become softer over time.

→ Do I need to peel the cucumbers?

No need to peel English or Persian cucumbers—their thin skin is tender and adds nice texture. If using regular garden cucumbers with thicker skin, consider peeling them first.

→ Can I make this less spicy?

Absolutely. Reduce the gochugaru to ½ teaspoon for a milder version, or omit it entirely for a non-spicy salad that still delivers tangy, savory flavor.

→ Why do I need to salt the cucumbers first?

Salting draws out excess water from the cucumbers, preventing the dressing from becoming diluted. This crucial step ensures your salad stays crunchy and well-seasoned.