Use a 6 quart dutch oven. Add beef, peppercorns, salt, bay leaves, and onion. Add water till everything is covered. Cook uncovered for 20 minutes at a boil.
Reduce heat and cook for 2 more hours covered
Add cabbage, potatoes and carrots - press them down so they are covered in liquid. Cook covered for 20 more minutes. Stir in butter and garnish with parsley
Enjoy
Recipe by Budget Savvy Diva at https://www.budgetsavvydiva.com/2013/03/corned-beef-cabbage-recipe/