When I was stationed in the Philippines eons ago, The best recipe I ever got was from the American southwest.
Cook a roast beef all day in the slow cooker until it shreds. Drain the juices and save for something else. Shred the beef separating the fat, bones. Put the beef back in the low cooker along with a jar of picante sauce ( I use Medium). Cook for another hour or so. Fix your tacos or burritos using this instead of hamburger.
This is really delicious.