Wrap the tofu in a paper towel to remove excess moisture.
Finely chop the onion, green onion, and Cheongyang chili peppers.
Add sesame oil to a pan and lightly sauté minced garlic.
Add the chopped vegetables and tofu to the pan, stir-fry, and season with salt and pepper.
Add doenjang (soybean paste), gochujang (red chili paste), and oligosaccharide syrup, mixing well as you simmer.
Turn off the heat, then add sesame seeds and another drizzle of sesame oil, mixing everything together.