Most corned beef briskets come packaged with a bag of seasoning spices already in it. That is absolutely fine to use if you wish, but I prefer to mix my own. Seasoning packets usually don't have a few ingredients that I like to add for more flavor and aroma.  Ingredients that I use in my corned beef seasoning are: Mustard seed Whole Peppercorns Whole cloves Allspice berries Crushed Red Pepper Flakes Coriander seeds Bay leaves Add this mix to the broth with corned beef for the best flavor! The aroma will be amazing from the minute it starts to cook.