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Hi everyone, I have been trying to get a definitive answer to whether or not my low fire shino is truly food safe. Here is the recipe: Lithium carb 26 Neph sy 64 EPK 10 I know that the powdered form of lithium carbonate is considered toxic and precautions should be used in glaze preparation. However once it it fired to maturity (cone 04 for this glaze) it is converted to lithium oxide. I could me misunderstanding, but I have read that in the oxide form, it is safe. Can anyone shed any light on this for me? I love this glaze for its semi-matte texture, beautiful color development, and interesting reactions with other glazes. If it isn't food safe, I would love to know how I could alter it so that it is. Thank you in advance for your help! Sloane