Heat a heavy-bottom pot over medium-high heat. Add the bacon and sear until most of the fat is released and it starts to crisp around the edges. Remove the bacon from the pot, but leave the grease.
Reduce the heat and carefully deglaze the pot with whiskey. Add the whiskey slowly to prevent the grease from spattering.
Use a wooden spoon to scrape up any bits stuck to the bottom of the pot. Stir every few minutes until half of the whiskey has evaporated.
Add the lard to the pot and melt it into the remaining liquid. Then, add the drained and rinsed beans, stirring them to absorb the liquids.
Mix in the tomato paste, ensuring all the beans are coated, and bring the mixture to a simmer.
Reduce the heat to medium and add the brown sugar and water. Season with a pinch of cinnamon, oregano, and seasoned pepper.
Return the bacon to the pot and stir it into the beans. Allow the beans to simmer, stirring occasionally, for about 30 minutes or until most of the liquid has evaporated and the beans are soft and mushy when pinched between fingers.
Stir in the cilantro and reduce the heat to low to further thicken the sauce. Serve immediately. The beans will continue to thicken as they cool. Enjoy!