I use Trader Joe's Cuban Style Black Beans because they're already prepared with onions, green peppers, garlic, mild vinegar and spices. Sodium is 370g/serving, which is not too salty.
- Spoon some beans and liquid from the can into a saucepan.
- Add a handful or two of prewashed spinach.
- Simmer on medium heat just until beans start to bubble and spinach wilts.