Remove corned beef from package and place in large pot with sufficient water to cover meat. Bring water to boil. For a more robust flavor, add desired amount of enclosed spice packet to water. Reduce to simmer and cover. Simmer approx. 2 1/2 – 3 hours or until firmly fork tender. Internal temperature should be at least 160°F. Remove meat from pot and let stand 5 – 10 minutes. Slice thinly across the grain and serve.