Prepare the ingredients: slice 2 cucumbers and 1/4 onion into bite-sized pieces.

Slice 1 green chili into small pieces.

Mix 1 tbsp gochujang, 1 tbsp chili powder, 1 tbsp minced garlic, 1 tbsp sugar, and 2 tbsp vinegar in a bowl.

Sprinkle salt over the cucumber slices and let them sit for 10 minutes.

Rinse the cucumbers with water and drain thoroughly.

Combine cucumbers, onion slices, and green chili in a mixing bowl.

Pour the prepared seasoning mixture over the vegetables and mix well.

Add 1 tbsp sesame oil and mix again.