01 - In a medium bowl, whisk together soy sauce, brown sugar, water, rice vinegar, sesame oil, ginger, garlic, gochujang, and grated pear until well combined.
02 - Place beef chunks in the bottom of the crock pot. Pour the sauce over the beef, ensuring all pieces are evenly coated.
03 - Cover and cook on low for 6-7 hours, or until beef is incredibly tender and shreds easily with a fork.
04 - Remove beef from the crock pot and shred using two forks.
05 - Skim excess fat off the sauce in the crock pot. In a small bowl, mix cornstarch with 2 tablespoons cold water to form a slurry. Stir the slurry into the sauce.
06 - Return shredded beef to the crock pot. Stir to coat the beef in the thickened sauce. Cook on high for another 15 minutes, or until sauce reaches desired consistency.
07 - Serve hot over cooked rice, garnished with sliced green onions and toasted sesame seeds.