Cut the pork loin into six equal pieces and place into a 3 1/2 qt crock pot. Cut ginger in three slices and add to meat. Add the remaining ingredients. Cook on low 6 hours or high 3 hours.
Remove the pork to a plate. Remove and discard the cinnamon stick, the ginger and the garlic cloves. Transfer the liquid to a pot over high heat and simmer until reduced and slightly thickened and glossy.
Slice pork 1/4"-1/3" thick and serve with thickened sauce.