Take a couple pounds of roast throw in crock pot with 1 jar destemmed pepperoncini peppers and the juice from the jar. A little pepper and garlic to taste. 6 hours later put on a hard roll(with lots'o juice soak its innerds) and some provolone on top. Voila, sandwich heaven. Simple is better. My eyes roll back just thinking about the leftovers.
Try it and report back I am just passing on the wealth.