<<Disclaimer: Verify this information before applying it to your situation.>> Help! I have been diagnosed with celiac sprue. It has been three years now. I have been trying to find different foods to eat as I am tired of rice, rice, and more rice! I found several recipes on the Internet which calls for Sweet chestnut puree (Tinned) but have not been successful finding it. Do you know where one can purchase this ingredient. Also, another ingredient is called Tartaric acid. I can't find this either. Please help. Thank you. Diane Moulds Int'l Falls, MN, USA