Prepare the ingredients by slicing the beef short ribs into individual pieces, then chop the vegetables and Korean pear into chunks. Set aside.
In a pan, heat some oil over medium heat, then sear the short ribs on both sides until golden-brown (about 3-4 minutes). Set aside. Searing the short ribs locks in the juices so the meat will remain tender and moist during the long cooking process.
In a deep pot, heat some oil over medium heat, then add in the chopped onions, carrots, and potatoes. Stir-fry for about 2 minutes until fragrant and slightly golden.
Add in about 2-3 tbsp of bulgogi sauce, and stir-fry for another 2 minutes.
Transfer the beef short ribs back to the pot, add in garlic cloves, and give it a stir.
Add in the remaining bulgogi sauce, and water to a level that covers half the height of beef short ribs and other ingredients. Give it a stir to mix well.
Transfer chopped pears into the pot, ensure all the ingredients are coated in the braising liquid, then cover with a lid and simmer for 1 hour.
After 1 hour, turn off the heat, and let the pot sit for 15-20 minutes. Turn the heat back on to low, and simmer for another 20-30 minutes. Repeat this step until the short ribs are tender enough to fall off the bones easily (I did this step twice). Tip: This technique allows the flavours meld and develop fully. The resting period lets the meat absorb moisture and flavours from the sauce, making it incredibly tender as a result!
Garnish the dish with sesame seeds and chopped spring onions, and enjoy!