Take the boned pork shoulder, season it with salt, pepper, fennel, dry peppers and garlic and tie with string.
Preheat oven at 450F degrees.
Place roast in a roasting pan and drizzle with oil.
Cook for 30 minutes.
Reduce heat to 300F degrees and continue to cook for 3 hours.
Take out the roast and let it rest for 15 minutes.
Skin should be crunchy.