Making Chestnut Flour from Foraged Chestnuts

Reader Contribution by Susan Tipton-Fox and The Mushroom Hut @ Fox Farms/Micro Dairy
Published on November 26, 2017
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Chestnuts are one of my favorite foraging foods. The chestnut we have is the Chinese chestnut as most of the American chestnut trees were wiped out many years ago. Here in my area, Western North Carolina, the chestnut burs/nuts start falling around the first week in September.

The reason I try to watch for the first fall is that you want to get the chestnuts as soon as they start falling. Otherwise, they can become wormy. I try to pick the chestnuts up at least once per day. If they stay on the ground and become wet they can “sour” in the shell. You want to process your chestnuts as soon as possible don’t let them sit around. You can roast, boil, make chestnut flour (gluten-free), chestnut butter and/or freeze.

You may find “green” burs with the chestnuts still inside. Be careful when handling they can really hurt (you may want to wear gloves). You can pick these up and let dry for a few days and most often the chestnuts will fall out.

Some people think there is too much work involved in processing the chestnuts after you collect them. They need to be heat treated before eating because they do contain tannins that can cause stomach upset to some people.

I prefer to oven bake my chestnuts and grind into a chestnut flour.

To get your chestnuts ready for baking, most people will tell you to “score” or make an X on the bottom of the chestnuts. I find this is one too many steps. I take a knife and put the chestnut on a cutting board and cut each chestnut in half. Be very careful when doing this part that the knife doesn’t slip. This allows you to see if the chestnut is a “good” one and this saves a step later. When heating, the chestnut will pull away from the shell and when cooled is much easier to peel!

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