Wash the perilla leaves thoroughly and drain any excess water.
Julienne the onion, carrot, and green onion.
Mix soy sauce, red pepper powder, stevia (or sugar), garlic, ginger, and fish sauce together to make the seasoning sauce.
Spread the vegetables and seasoning sauce layer by layer between the perilla leaves and stack them.
Place in a container and let it ferment for about a day before eating.