Galbi Jjim Braised Short Ribs

Name: Galbi Jjim (Braised Short Ribs)
Ingredients: 5 lb. bone-in beef short ribs, cut “English-style” into 2- by 3-in. pieces; 1 large white onion (8 oz.), peeled and quartered; 8 garlic cloves, peeled; ⅓ cup peeled, sliced ginger; 1 cup (8 oz.) coarsely chopped kimchi, with juice; ¾ cup soy sauce; ½ cup light brown sugar; ½ cup mirin; ½ cup dry red wine; 1 tsp. freshly ground black pepper; 2 cups coarsely chopped carrots; 2 cups coarsely chopped Korean radishes; 1 cup (6 oz.) roasted, peeled chestnuts; 7 dried jujubes; 1 large egg; Neutral oil, for frying; 1 Tbsp. pine nuts; 1 Tbsp. Korean chile threads; ⅓ cup thinly sliced scallions