Pinto beans need beer. They require beer. Shiner Bock is the best for these purposes.
1lb pintos
3 cups pico (don't be a pussy, make your own. Roma tomato, white onion, jalapeno pepper, cilantro)
3 cloves garlic, minced
3 tbsp comino
2 tbsp coarse kosher
1 tbsp coarse ground black pepper
unsalted beef stock (the unsalted part is important, sodium is not your friend here)
water
2 bottles shiner bock
3 cups chopped brisket
rinse beans then soak IN WATER overnight. Stock adds sodium content and makes for thick, soggy beans. Contrary to popular opinion here, good pintos (borrachos) should have a thin liquid.
At cook time, drain and rinse beans again. Put beans in stock pot with unsalted beef stock (kitchen basics brand is inexpensive and pretty good) and water, 1:1 on the liquid. Liquid should cover beans by 3-4" (depends on dimensions of your pot). Bring beans to quick boil, then reduce to low heat and a slow boil. Cook beans until nearly tender then reduce heat to simmer. Add beer, garlic, and seasoning, continue cooking until beans are tender. Then add prepared pico and brisket and remove from heat. Rest the beans for 15 minutes before plating for judging. Pico should still be moderately al dente and the liquid clear.
If you've had my beans before, that's the recipe (except I stopped putting brisket in them about a year ago).