Cut Chuck Roast into 3 inch chunks. Add Salt
Sear each piece of beef in a hot pan and set aside
Char your tomatoes and Onion using a broiler, torch or hot hot pan
In a large pot, add onions, tomatoes and heat them up. Add the whole Garlic, Cloves, Chili Peppers and all the spices except the Bay Leaves.
Stir around for a few minutes, then add Vinegar and 4 cups of water. Bring to a boil, then simmer the broth for 15 minutes.
Broth goes into a blender and blend it as smooth as possible. Pour through a fine mesh strainer and return to cleaned pot. Rinse the dirty blender with 3 cups of water to rinse and catch all the remining bits. STrain and into the pot.
Return the seared Beef to the pot and simmer for about 3 hours. Remove Beef, shred it and place in a bowl.