Step 1
Cook beef suet in a large soup pot over medium heat until pieces render their fat, about 15 minutes. Discard suet solids. Add beef marrow bones, ground chuck, pork, beef short ribs, oxtail, beef shank, flank steak, onions, garlic, 1/4 cup chili powder, 2 tablespoons hot paprika, 1 1/2 teaspoon salt, 1 1/2 teaspoon black pepper, 1 1/2 teaspoon oregano, and bay leaves to the pot. Stir mixture to coat with spices; pour in 1 cup beef broth. Simmer until onion is translucent and soft, 10 to 15 minutes.