| An old batch of dried beans, most likely. Beans have a long shelf life, but they do get too old to soften eventually. |
| Don't salt until already soft |
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Put them in a pressure cooker for a few minutes.
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+1 |
| It's most likely the salt and salt in the stock. I never add it until after the beans are cooked. |
| Next time, soak them with some baking soda, they'll cook much faster. |