If the mevarech does not want to drink from the Birkat HaMazon cup, may one of the assembled drink instead, and may two people's drinking combine toward the minimum?
Synopsis
If the mevarech does not wish to drink, one of the assembled must drink the minimum amount (melo lugmav). Two people's drinking does not combine. It is most praiseworthy for everyone to taste. The Geonim, who require the mevarech specifically for Kiddush, agree that for BHM any one of the assembled suffices.
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Discussion
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