Reply To: Chestnut flour? Home › Forums › Food and Dining › Chestnut flour? › Reply To: Chestnut flour? eteuwen November 14, 2012 at 9:47 am I believe nuts.com carries it. But like ag11 said, you can also make it at home. I recently made pistachio flour by grinding it in a coffee grinder and then sifting it through a fine seive. It worked great.