cut the beef in four big pieces and keep the fat on because you will cook it for four hours
season the beff on all sides with sea salt
in a big cast iron pot running on medium heat add the peanut oil
add the beef and sear it
take the beef out of the cast iron pot
add the coarsely chopped onions and keep the same temperature for two minutes then turn the heat off
once the onions are brown in colour create a space in the middle and add a little bit of peanut oil
add the minced garlic
add the minced ginger and let them cook for 20-30 seconds
add the black pepper and the paprika, cumin, mustard powder
fry them until it releases the flavours
add the tomato paste, mix it in and let it fry also a little bit
add sake to deglaze the pot
add the beef broth
add the dark beer
add the soy sauce
add the sriracha and bring it back to a simmer
add the beef in the cast iron pot
add the dried chilli ancho
add the bay leaves
add the rinds of parmesan
cover the cast iron pot and put it in the pre heated oven running at 150℃ - 302℉
after two hours in take the pot out and flip the beef over, put it back in and let it cook for another two hours
once ready take the beef out and shred it
take the bao bun and spread a little bit of the sticky sauce
add a couple of carrot sticks, cucumber, cilantro and pickled red onions
ready to enjoy