In a large skillet, sauté the onion with the oil for 3 minutes. Add the garlic and cook for another 3 minutes, then add the beef and sear on all sides.

Once the beef is seared, transfer it to a large pot. Add the beef broth, salt, cumin, and black pepper. Cover and simmer over low heat for 1 hour.

While the beef is cooking, toast the chiles and garlic, and peel the peanuts.

Blend the peanuts, chiles, and garlic in a blender with the water and salt until very smooth.

Once the sauce and beef are fully cooked, serve with your favorite beans and tortillas.