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“Oysters release their eggs from around August to September. So during this time, they are small and don't taste good. They gradually start to put on weight again after that. And when the snow on the mountains melt and the water flows into the sea from the river, the oysters taste even better. Snow melt is rich in nutrients, and the plankton grows on that. The oysters eat the plankton and grow larger.” — Tetsu Kariya
Oysters release their eggs from around August to September. So during this time, they are small and don't taste good. They gradually start to put on weight again after that.
And when the snow on the mountains melt and the water flows into the sea from the river, the oysters taste even better. Snow melt is rich in nutrients, and the plankton grows on that. The oysters eat the plankton and grow larger.