Set your Sous Vide to 74 degrees Celsius (165 degrees Fahrenheit).
Season the pork neck with a good BBQ rub and vacuum seal it. Then cook it Sous Vide for 24 hours.
Shred carrots and white cabbage, add crushed cumin, cane sugar, Dijon mustard, honey, apple cider vinegar, mayonnaise, and crème fraîche, and mix it all together. Chill for later use.
When the pork is nearly done after 24 hours, preheat the oven to 200c fan, so the brioche buns can be warmed.
Additionally, the pork should be patted dry with kitchen paper, given another layer of BBQ rub, and then given a crust either in the oven at 230 degrees Celsius (446 degrees Fahrenheit) fan or with a gas torch.
Then shred the meat and serve in a brioche bun with your coleslaw, jalapenos, and a good BBQ sauce.
Enjoy and bon appétit.