Small seeds.
Big deal.

Beans have fed humanity for over 8,000 years. They're cheap, filling, endlessly versatile, and they quietly fix nitrogen in the soil while they grow. Welcome to the field guide.

Meet the beans

Varieties

Pick a bean to see what it's good for.

Nutrition

Per cooked cup (~170 g), approximate values.

Beans pair with grains (rice, corn) to give a complete amino-acid profile.

Cooking basics

  1. Sort & rinse. Pick out stones and shriveled beans, then rinse well.
  2. Soak. Overnight in salted water (1 tbsp salt per 4 qt). Or quick-soak: boil 2 minutes, rest 1 hour.
  3. Simmer gently. Cover with fresh water by 2 inches. Never a hard boil, which splits skins.
  4. Season late-ish. Salt in the soak is fine. Add acids (tomato, vinegar) only once beans are tender.
  5. Taste to test. Doneness is creamy all the way through, usually 45–120 minutes.
Why do beans cause gas?

Oligosaccharides, sugars we can't digest, get fermented by gut bacteria. Soaking and discarding the water, cooking thoroughly, and eating beans regularly all help.

Are raw kidney beans dangerous?

Yes. Raw and undercooked kidney beans contain phytohaemagglutinin. Boil them vigorously for at least 10 minutes first. Slow cookers on low may not get hot enough.

A short history

Fun facts