Place the lamb shoulder in the slow cooker.
Season the lamb shoulder with sea salt, ensuring it's evenly coated.
If desired, sprinkle dried rosemary over the lamb for added flavor.
Cover the slow cooker with the lid.
Cook the lamb on low for 8-10 hours until it becomes incredibly tender and falls apart easily.
Once cooked, shred the slow-cooked lamb with a fork, allowing the juices and flavors to meld together.
Serve the slow-cooked lamb shoulder hot, and enjoy the rich, succulent meat.