Beans

When cooking beans, it's important to know how high up you are.
If you're way above sea level, you'll probably want and need to cook them in a Pressure cooker. Especially if the beans are a year old or older. Otherwise, you may even cook them for 3 days, and they'll never soften up!

Pressure cooking cooks things quicker, but it's also good to simmer items the regular way after softening/cooking, to blend in the flavors.