Cut the pork neck into bite-sized pieces.
Slice the tofu into 1cm thick pieces.
Cut the onion, carrot, and zucchini into easy-to-eat pieces.
Wash the perilla leaves thoroughly for preparation.
In a bowl, mix soy sauce, gochujang, minced garlic, red pepper powder, and sesame oil to make the seasoning sauce.
Place the onion and zucchini on the bottom of the pot.
Arrange the pork neck and tofu on top.
Add the remaining vegetables and perilla leaves.
Evenly pour the seasoning sauce over the ingredients.
Cover with a lid and steam over medium-low heat for 15 minutes.