Preheat oven to 170 Degrees Celsius.
Lightly coat the pork with oil, salt and pepper.
Heat a large ovenproof casserole pot and sear the pork on each side for about 3-4 minutes per side or until nicely browned. Remove pork and set aside.
In the same pot, add the onion, garlic and ginger and saute over moderate heat until softened and fragrant.
Add the tomatoes, fish sauce, sriracha, vinegar and sugar, mix until well combined and bring to the boil.
Add the pork back into the pot, fat side up and laddle the sauce over the pork until well coated.
Cover and roast for +- 3 hours or until meat falls apart when prodded with a fork.
Mix the cabbage, onion and rice vinegar together. Cover and refrigerate until ready to serve.
Remove pork from the sauce, use 2 forks to shred the pork into stringy pieces. Add the pulled pork back into the saucy pot together with the sweet soy sauce and fresh coriander. Mix until pork is well coated in the sauce.
When ready to serve, brush the wraps with a little olive or coconut oil. Heat a griddle pan until smoking hot. Grill tortillas until charred on both sides - on standing they will crisp up. This will only take a few seconds, so keep an eye on them.
Spread some kimchi onto each wrap, top with pickled cabbage & red onion, a generous portion of pulled pork and some diced pineapple. Garnish with fresh coriander, fold them over and enjoy with sriracha sauce on the side.
Keep some napkins nearby, just saying.