Slow Smoked Pepper-Crusted BBQ Brisket Recipe

1 piece brisket, approx 2 kg (4.5 lbs) with fat cap attached

1 Tbsp dijon mustard, 2 Tbsp each apple cider vinegar and beer

2 Tbsp BBQ Spice Rub
heaped 1/2 tsp flaky sea salt
lots and lots of fresh cracked black pepper (more than that, yes really)

real wood charcoal bricks
hickory chips (or any other type of wood you prefer)