01 -
Put the chuck roast in a slow cooker or a big oven-safe pot.
02 -
In a bowl, stir together soy sauce, hoisin, honey, vinegar, brown sugar, garlic, ginger, sesame oil, and chili flakes until smooth.
03 -
Make sure the sauce covers the roast completely by pouring it over evenly.
04 -
If using a slow cooker, keep it on low for 6 to 8 hours. If baking, heat the oven to 325°F (160°C) and cook for 3 to 4 hours until the meat pulls apart easily.
05 -
Put the leftover sauce in a saucepan and warm it up on medium. Add the cornstarch mix while stirring until the sauce thickens into a glaze, about 3 to 5 minutes.
06 -
Drizzle the thick glaze over the roast and spread it around to cover all sides with the sticky sauce.
07 -
Finish off by sprinkling on sesame seeds and the green onion slices just before you eat.