Remove the corned beef from the packaging. Keep the spice packet included.
Rinse the corned beef and place it in a large pot. Fill the pot ¾ full of hot water.
Place the pot on the cooktop and sprinkle the spice packet in the water.
Bring the pot to a boil. Once boiling, turn the heat down to a slow boil or simmer.
Cover the pot and let the corned beef cook for 4 hours.
*Alternatively, you can cook the corned beef in a slow cooker for 5 hours on high.
Remove the cooked coned beef from the slow cooker or pot, and let it drain.
*Tip – If you’re looking for a golden caramel color on the top of the corned beef, place the corned beef in a broiler-safe pan and broil it in the oven under a low broiler for 3-4 minutes.
Remove from, slice, and serve.