For the most flavorful corned beef, allow the brisket to brine for the full 10 days. Adjust the pickling spices to your personal preference. Feel free to experiment with different combinations and amounts. Resting the brisket after cooking is crucial for tender, juicy slices. Do not skip this step! Serve with your favorite sides, such as oatmeal Irish soda bread and stone-ground mustard, for a complete and satisfying meal.