Red beans and rice are a staple in Louisiana, in fact, red beans are held in the highest of regards in New Orleans when it comes to the entire legume family.
Add the beans to a large container and completely cover them with cold water until the water is about 4-6 inches over the top of the beans. Let sit overnight.
Add the bacon fat to a large pot over medium heat and sweat the onions, celery, peppers, and garlic, stirring frequently, which takes about 10 minutes.
Next, add in the beans, stock, bay leaves, seasonings, and ham, cover with a lid, and cook over low-medium heat for about 2 hours or until the beans are very tender and the liquid has thickened.