Add 10 cups water beef short ribs and salt so they submerge in the water. Set Instant Pot to ‘Saute’ on Custom Setting on High Temperature. Let it boil for 15 minutes to get all the impurities out.
While the beef is boiling, chop your aromatics such as onion, garlic, ginger, potatoes, carrots, and green onions. (Optional) Chop radish.
After 15 minutes of boiling, you will see that the water has become grey, and the impurities have risen to the top. Pour out the water and rinse the beef ribs until they look clean and there's no blood stuck to the beef. Set aside. Wash you Instapot so it's extra clean too and wipe it dry.
Next, add the beef, water, chopped onions, garlic, ginger, potatoes, carrots and green onions in the Instant Pot. Turn settings to pressure cook on low for 1 hour (custom setting). Press start button.
Don’t put the lid on just yet. It takes a while for the pot to heat up. During this time, make the sauce so we can be extra efficient! Mix together soy sauce, gochugaru, gochujang, soju, honey and korean plum extract (can sub with half an apple) and add in the pot. Now close the lid and wait for the magic to happen.
(optional) Once your short ribs are ready and you want a thicker sauce, you can make a cornstarch slurry by mixing ¼ cup water with 1 tablespoon corn starch. Pour in the slurry while the pot is extra hot and mix together.
Serve with rice and enjoy the fall apart beef!