Serves: 4
Total time: about 3 hours 35 minutes (prep 35 minutes, cook 3 hours).
Slice the sweet potatoes very thin with a mandoline for even layers.
Slow braising is essential for tender, flavorful shredded beef.
Assemble just before serving to keep the layers structured and the sauce creamy.
The braised short rib filling can be made a day ahead and reheated gently before assembling. The shredded filling freezes for up to 2 months.