Clean the beef tripe thoroughly and cut it into bite-sized pieces.
Slice vegetables such as onion, green onion, and chili peppers.
Add cooking oil to a pan, then stir-fry the tripe on medium heat until partially cooked.
When the tripe is about halfway done, add the vegetables and stir-fry together.
Add seasonings like gochujang (Korean chili paste), soy sauce, minced garlic, and sugar. Mix well and continue to stir-fry.
Once everything is fully cooked and the seasonings are well absorbed, turn off the heat and transfer to a plate.