Step 1

Preheat the oven to 225 degrees F. Set the pork on a cutting board and score the fat in a crosshatch pattern, making the cuts about 3/4 inch deep and 1 inch apart. Make the rub: Combine the pimenton, garlic powder, cayenne pepper, brown sugar, celery salt, mustard powder and 1 1/2 teaspoons salt in a small bowl. Massage it into the meat.

Step 2

Place the pork in a roasting pan and pour the beer into the pan. Cover with foil and roast 3 hours. Check it periodically to make sure everything is going along just fine, and turn the roast over every hour.

Step 3

Remove the foil and continue roasting until the pork has reached an internal temperature of 190 degrees F, about 1 1/2 more hours. Remove from the oven, cover loosely with foil and let rest 30 minutes.

Step 4

Sometime during the marathon cooking time, make the sauce: Combine the vinegar, garlic, chile, brown sugar, tomato paste, dijon mustard and 1 1/2 teaspoons salt in a small saucepan and bring to a boil. Taste it to make sure it is delicious; set aside. Remove the chile. When the sauce is cool, I recommend putting it in a squeeze bottle for easy use.

Step 5

Pull the pork into long shreds using 2 forks. Get rid of the fat and anything else that doesn't look delicious. Toss the pork with any residual pan juices and add salt to taste.

Step 6

Serve the pork on slider rolls with a drizzle of sauce; top with coleslaw.