Boil a pot of water and put the meat and ginger into the pot to cook. Wait until a layer of white foam floats in the pot. The purpose of the ginger slices is to remove the fish odor and grease. Strain off the foam and water and set the meat aside. Add the oil and sugar to the crock pot and toss with a shovel. Being careful not to burn, fry the sugar until golden brown. Pour the meat in. The syrup will color the meat. Add seasonings, salt, soy sauce and the right amount of water and simmer together.