Place corned beef in a pot and cover with water. Add the pickling spice into the water. Cover the pot with a lid and bring to a boil, then reduce to a low simmer. Simmer approximately 50 minutes per pound or until tender.(if using a slow cooker refer to the directions for operating)
After 1 hour add the potatoes and cabbage, cook until the vegetables are tender, about 30 minutes.Remove the pot from the heat and let the corned beef sit in the liquid for 10 minutes.
Slice the corned beef thin against the grain (about 4oz per portion) and serve with about 1/4 cup of cabbage and 3 to 4 chunks of potato per portion. Serve with side of mustard if desired and Irish soda bread.
Notes
Corned beef will shrink by about 1/3 to half after cooking. Pro tip: Use leftover corned beef and potatoes for upcoming recipe