Cut the meat into thin slices. For those who are in the US, you can get the pre-sliced ones at the grocery stores, or you can ask your butchers to cut them for you. I got mine at Winco.
Mix all the spices together except for the fish sauce.
Marinate the meat by sprinkling the seasoning mixture to cover both sides of the meat. Do this for each slice, and let it rest in the fridge overnight.
After marinating the meat, cook it on a skillet or wok (medium heat) with 2 tablespoons of fish sauce until it is done. The meat should be cooked through, but not too overcooked.
Preheat the oven to 120 °F. On a baking rack, place the meat in a single layer. You can either bake the meat at 120 °F or dehydrate it for 2 hours. Remember to have a tray at the bottom of your oven to catch the drips.
Once your meat is partially dried, it might feel a little tough and chewy depending on the quality of the meat you get at the store. To tenderize them, you can use a tenderizing mallet to pound and flatten the meat and soften the muscle fibers.
Flip the meat every 30 minutes to make sure it is dried completely on both sides.