Autumn Foraging: Acorns, Sweet Chestnuts, and Hazelnuts

Autumn is the season when foraging shifts from greens to stores. The hedgerows and woodland floors fill with nuts, and for a few weeks the landscape offers real calories — the kind you can carry home by the pocketful. There is something deeply satisfying about it, a small echo of what our ancestors did every year without thinking.

The three nuts worth learning first are acorns, sweet chestnuts, and hazelnuts. Each has its own rules, its own processing, and its own particular pleasures.

Acorns: Patience Rewarded

Acorns are everywhere in a good year, and they are edible — but only after you deal with the tannins. Bitter enough to make your mouth pucker, tannins need to be leached out before the acorns are any good. The process is simple, just slow.

Gather acorns as soon as they fall, discarding any with holes, cracks, or a dull, lightweight feel. Shell them — a nutcracker or a firm thumb works — and remove the papery skins. Soak the kernels in cold water, changing the water twice a day, for anywhere from three days to a week. Taste one each day; when the bitterness is gone, they are ready. Alternatively, simmer them in several changes of water until the water no longer turns brown. Dry them thoroughly, then grind in a food processor or mill to make acorn flour.

Acorn flour is dense, slightly sweet, and gluten-free. Use it blended with wheat flour — about one part acorn to three parts wheat — in pancakes, biscuits, and a rustic soda bread. It adds a faintly nutty, earthy depth that is hard to get any other way.

A word of caution: acorns from white oaks (those with rounded leaf lobes) leach faster than red oak acorns, which can take twice as long. Both are fine to eat once the bitterness is gone.

Chestnuts and Hazelnuts

Sweet chestnuts are a different creature entirely from horse chestnuts, which are toxic and should never be eaten. Sweet chestnuts are wrapped in a spiky green husk and the nut itself has a distinctive pointed tip and a small tuft. They are starchy and sweet, and they spoil quickly, so use them within a few days.

Score an X in the flat side of each nut, then roast at 200°C for twenty to thirty minutes, or boil for fifteen. Peel while warm — the skin comes away easily when hot and clings stubbornly when cold. Eat them as they are, or fold them into stuffing, soup, or a chestnut and mushroom pie. They also freeze well, shelled and peeled.

Hazelnuts are the easiest of the three. Look for the papery green husks on the branches; when they begin to yellow and the nuts inside rattle, they are ready. Pick them before the squirrels do — a friendly competition that has gone on for a very long time. Spread them in a single layer to dry for a week or two in a warm, airy room, then store in jars. Toast them in a dry pan to loosen the skins, rub in a tea towel, and use in cakes, brittle, or simply eaten by the handful.

Autumn foraging is slower work than spring. It asks for patience, for drying racks and jars, for the willingness to wait. But the reward is a pantry that carries you into winter — and a very good excuse to spend October afternoons in the woods.