ENTERTAINMENT
December 18, 1988 | By RUTH REICHL
"Oh no," groaned one of the guests, "do we have to?" A bottle of wine had just been plunked on the table, neatly wrapped in a plain brown bag. Once again it was time to play "Guess the Vintage." The mystery wine was poured for each of the dozen invitees. They swirled and sniffed. They hazarded guesses. For this group of august wine experts, it was not a new game. Somebody suggested that the wine came from Napa. Another detected the flavor of the '53 Medoc.