Remove the spines from the cucumber using the back of a knife and wash it thoroughly.

Slice the cucumber as desired, either into rounds or diagonally and halved.

Chop 1 spring onion and add it to the cucumber. Alternatively, use 1/3 of an onion for a stronger flavor.

Mix all the condiments together: 0.5 tbsp gochujang, 0.5 tbsp soy sauce, 0.5 tbsp minced garlic, 1 tbsp chili powder, 2/3 tbsp sugar, 1 tbsp plum extract, 1 tbsp vinegar, and 1 tbsp sesame oil.