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The way to serve it is in a cylindrical glass about the size of the typical juice glass. Put this in a fresh wooden box (or in a saucer if that is all that is available) and overpour the glass such that it overflows. Take a sip to make space and then pour the balance ( the bit on the dish) into the glass and carry on.</font>
That's interesting, I've always been served the sake directly into the box (which sits on the saucer). You then drink the sake out of the box. I was told that the reason you pour it until it overflows is to show your guest how generous you are.