In a medium-sized pot, heat the lard over med-high heat. Add the onions, peppers, and garlic. Sauté for 5 minutes or until the veggies take on a glossy, translucent appearance.
Add the beer and scrape the bottom of the pot to loosen up any cooked on food.
Add the drained beans, tomato sauce, bay leaf, and all spices- except the cilantro and black pepper.
Bring to a boil and reduce the heat to low. Simmer for 15 minutes.
Stir and adjust seasonings. Add the cilantro and stir. Add black pepper, if desired.
Enjoy!
Notes
If you prefer a mild taste, omit the serrano pepper. If you like your beans on the spicy seed, add two!