Reduce the heat to medium-lowish and simmer vigorously, stirring occasionally, until the pork is fork-tender and the liquid has completely evaporated, 1 1/2 to 2 hours. Discard the orange pieces and bay leaves.☞ TESTER TIP: If the liquid hasn’t completely evaporated, transfer the pork to a bowl and continue to simmer the liquid, stirring often, until it is reduced and only a glossy layer of oil remains.