Toast and crush spices:

You can either used store-bought pickling spices or you can make your own. To make your own, toast the allspice berries, mustard seeds, coriander seeds, red pepper flakes, peppercorns, cloves, and cardamom pods in a small frying pan on medium heat until fragrant. Note that it is pretty easy to burn spices; you want enough heat to release their flavors, not so much that they get burned.

Remove from heat and place in a small bowl. Use a mortar and pestle to crush the spices a little (or the back of a spoon or the side of a knife on a flat surface). Add to a small bowl and stir in the crumbled bay leaves and ground ginger.

Make curing brine:

Add about 3 Tbsp of the spice mix (reserve the rest for cooking the corned beef after it has cured), plus the half stick of cinnamon, to a gallon of water in a large pot, along with the Kosher salt, pink salt (if using), and brown sugar. Bring to a boil, then remove from heat and let cool to room temperature. Then refrigerate until well chilled.

Brine the beef for 5-7 days:

Place the beef in a large, flat container or pan, and cover with the brine. The brine should cover the meat. The meat may float in which case you may want to weigh it down with a plate.

Alternatively you can use a 2-gallon freezer bag (placed in a container so if it leaks it doesn't leak all over your refrigerator), place the brisket in the freezer bag and about 2 quarts of brine, squeezing out the air from the bag before sealing.

Place in the refrigerator and chill from 5-7 days. Every day flip the Meat over, so that all sides get brined equally.

Cook the corned beef:

At the end of the cure, remove the meat from the brine and rinse off the brine with cold water. Place the beef in a large pot that just fits around the brisket and cover with at least one inch of water. If you want your beef less salty, add another inch of water to the pot.

Add a tablespoon of the pickling spices to the pot. Bring to a boil, reduce to a very low simmer (barely bubbling), and cook 3-4 hours, until the corned beef is fork-tender. (At this point you can store in the fridge for up to a week.)

Cut across the grain:

Remove the meat to a cutting board. (You can use the spiced cooking liquid to cook vegetables for boiled dinner or corned beef and cabbage.) Notice the visible lines on the meat; this is the "grain" of the meat or the direction of the muscle fibers.

To make the meat easier to cut, cut it first in half, along the grain of the meat. Then make thin crosswise cuts, across the grain to cut the meat to serve.