Place ribs into the slow cooker.
Stir together the shallot, fish sauce, salt and pepper.
Pour over ribs.
Cover and cook on low for 7 hours or until the meat is starting to fall off the bones, rotating the ribs after 3 1/2 hours.
Turn on your broiler. Carefully transfer the ribs to a foil-lined baking sheet and place under the broiler, meat side up, for 4-5 minutes or until nicely browned.
Pour the juices that remain in the slow cooker thru a sieve and into a sauce pan. Bring to a boil and then reduce to a simmer for 15 minutes until nice and thick.
Serve ribs brushed with reduced sauce.