Cut the beef into bite-sized pieces.
Soak the beef in cold water to remove the blood.
Boil the beef in a pot with water, green onion, garlic, and onion.
Once the beef is cooked, remove and shred it along the grain.
Return the shredded beef and boiled eggs to the pot, add soy sauce, sugar, and cooking wine, and simmer.
Cook until the sauce is reduced.
Add shishito peppers and simmer briefly.