How did Thomas Keller create "oysters and pearls" at The French Laundry?

That purple box of tapioca sitting on the grocery store shelf that said, “Pearls” and I thought, “Wow where do pearls come from?” Oysters. There was a moment of inspiration; it wasn’t a moment of creativity. I always knew about tapioca pudding, I just turned it into something savory. I also knew that tapioca has a pretty neutral flavor, so it can become the vehicle for any flavor that you want to enhance it with. In this case, it happened to be oysters and caviar. 

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