Or, if you're BBQ-ing or have a bonfire, make them up, double wrap in foil and bake for 10-20 minutes.
You will need:

In a dry pan toast cumin & coriander seeds until they smell good, don't go and do anything else or you'll end up with a black pan and a godawful smell:
 Mix salt, pepper & spicy paprika with the toasted seeds and crush them all together:
Mix salt, pepper & spicy paprika with the toasted seeds and crush them all together: Rub this mixture into the pork shoulder and leave for at least 2 hours, at most 24:
Rub this mixture into the pork shoulder and leave for at least 2 hours, at most 24: 3 onions, 3 carrots & 4 sticks of celery roughly chopped, ginger & garlic peeled & roughly chopped, 2 star anise, 6 crushed cardamon pods, 2 bay leaves & a cinnamon stick. Bit of oil in a pan then sweat down gently until soft & beginning to brown/caramelise
3 onions, 3 carrots & 4 sticks of celery roughly chopped, ginger & garlic peeled & roughly chopped, 2 star anise, 6 crushed cardamon pods, 2 bay leaves & a cinnamon stick. Bit of oil in a pan then sweat down gently until soft & beginning to brown/caramelise Like this - then stir in a small can of tomato puree and cook out:
Like this - then stir in a small can of tomato puree and cook out: Roughly chop some dried chillis. I'm using chipolte, ancho and some un-named ones from an Asian supermarket in Levenshulme.
Roughly chop some dried chillis. I'm using chipolte, ancho and some un-named ones from an Asian supermarket in Levenshulme.These places are good for chilli varieties:
http://www.manchesterconfidential.co.uk/Food-and-Drink/Mexican/Panchos-Burritos-Arndale-Reviewed
or
http://www.thespiceshop.co.uk/
 Sear off the shoulders(s), not too hot oil or the spice rub will burn:
Sear off the shoulders(s), not too hot oil or the spice rub will burn: Mix a bottle of tommy K (I use Sainsbury's basic) with the cooked veg, chopped chillis, about 1/4 of a bottle of Soy (careful not to make it too salty) about the same amount of wine vinegar, a big spoonful of mustard, a couple of cans of chopped toms and 2 roughly chopped apples.
Mix a bottle of tommy K (I use Sainsbury's basic) with the cooked veg, chopped chillis, about 1/4 of a bottle of Soy (careful not to make it too salty) about the same amount of wine vinegar, a big spoonful of mustard, a couple of cans of chopped toms and 2 roughly chopped apples.Heat all of this together until boiling and start to taste, add sugar or honey to balance out the vinegar so you get that nice sweet/sour thing going on. If you've got any stock (made from bones & trotters NOT a cube) this would be a more than welcome addition. When it's all nice and hot pour it over the pork (skin side up) and put it, uncovered, into a preheated oven (150 C) for 2 hours basting once. After this time cover with a lid or foil, if you're using foil make sure it doesn't press down on the skin. Bake for another 2-3 hours, the meat should be falling apart:

CAREFULLY, life the pork out of the liquid:
 Strain the sauce, chuck out the remaining veg/bits, and put into a saucepan to reduce until you get a nice thick sauce. You'd be well advised to skim this a couple of times as there will be a fair bit of fat floating on the surface:
Strain the sauce, chuck out the remaining veg/bits, and put into a saucepan to reduce until you get a nice thick sauce. You'd be well advised to skim this a couple of times as there will be a fair bit of fat floating on the surface: Make a joke about customs officers:
Make a joke about customs officers: Remove the skin from the pork, put on a rack then stick into the fridge - once cold it can be chopped up then deep fried or baked to make spicy pork scratchings:
Remove the skin from the pork, put on a rack then stick into the fridge - once cold it can be chopped up then deep fried or baked to make spicy pork scratchings: Scrape off the layer of fat between the skin and the meat and discard:
Scrape off the layer of fat between the skin and the meat and discard: Once the fat has done use a couple of spoons and shred the meat:
Once the fat has done use a couple of spoons and shred the meat:
Chuck some of the sauce on and mix, add sauce as necessary, you're aiming to coat the meat but not so it's "wet"

Like this:
 Slice some buns in half and bake in the oven (NOT under the grill) until they're nice and toasty.
Slice some buns in half and bake in the oven (NOT under the grill) until they're nice and toasty.Put a generous spoonful of pork on the bottom half, grated cheese and a spoonful of sauce on the top, then put back into the oven - keep an eye on them, you want the cheese to get melty not brown & crunchy:
 Once the cheese is melted remove and put the sandwiches together:
Once the cheese is melted remove and put the sandwiches together: Serve with beer, triple-cooked chips & good company:
Serve with beer, triple-cooked chips & good company: 
