In a 12-quart pot, combine beef chuck, pork, onions, garlic, salt, thyme, oregano, cumin powder, bay leaves, and cayenne pepper.
Fill the pot halfway with water and place it on low heat.
In a large frying pan, make a dark roux by heating corn oil over medium heat.
Gradually whisk in flour until the mixture turns dark brown.
Once the roux is dark, add tomato paste to the frying pan and cook slowly until the oil starts rising to the surface again.
Stir in chili powder, cooking until a thick paste forms, being careful not to burn.
Add the roux mixture to the pot of meat.
Simmer over low heat, stirring often, for at least 1 1/2 hours or longer.
Allow the chili to sit until grease rises to the surface, then skim it off.
Reheat the chili before serving.
Optional Thickening Method:
After the chili has cooked for a few hours and the flavors have blended, sprinkle and stir in cornmeal.
Cook for an additional 15 minutes, stirring to prevent lumps.
Adjust thickness by adding more cornmeal or water as needed.
Notes / Tips / Wine Advice:
This hearty and spicy chili pairs well with a full-bodied red wine such as a Malbec or a Cabernet Sauvignon, which can stand up to its bold flavors and richness.