Lancaster - ff Lee makes a mean Chinese dumpling.Pot stickers are a comfort food in the Lee household, and he's happy to show guests how he prepares them.But Lee's generosity with recipes stops in the kitchen.Ask the internationally respected ceramicist to divulge the formula for the Imperial Yellow glaze that colors some of his finest porcelain vessels, and he will politely demur."So many people want to know. I can't do that."His reluctance is understandable. Lee spent 17 years re-creating the ancient Chinese glaze through histo...

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