Cut the tofu into large pieces, and slice the green onion and Cheongyang chili pepper.
Pour water into a pot and, once it boils, add perilla seed powder and stir well to dissolve.
Add the tofu and bring it to a boil.
Season with soup soy sauce, minced garlic, and salt.
Add the sliced green onion and Cheongyang pepper, and boil it once more.