Whisk all sauce ingredients into a bowl.
Season the chuck roast with salt, pepper, and Chinese 5 Spice.
Pat the chuck roast dry with a paper towel.
Sear each side of the chuck roast in a dutch oven with grape seed oil.
Remove the roast and add the sauce to the dutch oven, scraping up the browned bits.
Add the roast back into the dutch oven and braise in a 290F degree oven for 3 hours.
Shred the roast and place it onto a sheet pan.
Add a little sauce to the meat, stir, and place under the broiler to caramelize.
For the sticky sauce, mix corn starch and water, add to remaining sauce, and bring to a boil.
Reduce the temperature and let it simmer until thick.
Serve the sauce on the side or drizzle over the beef, garnished with sesame seeds.
