Chestnut

If You Read Nothing Else

The one 'nut' that's really a starchy fruit — very low in fat (~1 g/oz), rich in complex carbohydrates, and naturally gluten-free.

The only common nut with meaningful vitamin C (~10–20 mg per 100 g roasted).

Persian medicine reads shāh-balūt as warm and dry — a fortifying winter food, especially for kidneys and cold-weak constitutions.

Always cook before eating: raw chestnuts carry tannins (plant compounds that give a dry, puckering taste) that irritate the gut. Scoring and roasting is the classical preparation.