Look for boneless country style pork ribs (the leaner the better) in the meat market. An hour before you want to grill, cut them in to sections about 4" long and put in a large sauce pan and enough water to cover them. Add a tablespoon of salt and a teaspoon of black pepper.
Bring this to a boil on high. After a few minutes, you will see some "crud" float to the surface. Don't get grossed out, but it will look like this:
Skim it off and throw it away (you may have to do this a couple of times). Reduce the heat to a gentle boil and boil for 45 minutes. Pull one of the pieces of pork out of the pan and see if it is fork tender. If not, boil for another 15 minutes (but no longer). Some pork tends to be tougher than others.
Drain pork and put it into a bowl. Drizzle with enough melted butter to coat each piece. Put the pork onto the barbecue grill and coat with your favorite barbecue sauce. Keep turning and basting until the barbecue sauce starts to crisp up on the edges (usually only takes about 10-15 minutes tops.