Clean and prepare the pork offal thoroughly.
Slice the vegetables such as onion, green onion, and chili peppers for easy eating.
Heat cooking oil in a pan and saute garlic to release aroma.
Add the pork offal and stir-fry over high heat.
Add vegetables and seasoning sauce (gochujang, red pepper flakes, soy sauce, etc.) and stir-fry together.
When the vegetables are softened and the offal is cooked, it is ready.