Place onions, garlic into a large food processor and process until finely chopped but not liquefied.
Add meat and all the seasonings and grind for another 3-5 minutes. Do not skip this step. If you do, it will be like ground beef with some weird seasonings in it. Grind it until itís a big, huge, sticky mess that you wonder how you will ever clean up.
Since writing this recipe Iíve discovered a faster way to do this, which is to use your stand mixer with the paddle. Paddle the living daylights out of the meat with the spices until itís a sticky mess. This is a lot easier to clean up than a blender, and the end result is the same. So use whatever you have that works for you.
Put into a foil pan, and smooth out the top, and bake at 350 for 60 mins, or until it reaches an internal temperature of 175-180
Take it out of the oven and drain all the fat.
Cover it with foil and then place something heavy on it to compress it. I put a cast iron skillet on top and then carefully placed 3 cans of beans on top of the skillet to compress it.
Let it rest for 30 mins and then slice into thin slices.