> The unusual name of the wine region dates back to a 12th-century tale of a German bishop traveling to the Vatican for a meeting with the pope. The bishop sent a prelate ahead of him to survey the villages along the route for the best wines. The 'wine scout' had instructions to write 'Est' (Latin for 'There is') on the door or on the wall of the inns he visited when he was particularly impressed with the quality of the wine they served so the bishop following on his trail would have known in advance where to make a stop. At a Montefiascone inn, the prelate was reportedly so overwhelmed with the local wine that he wrote Est! Est!! Est!!! on the door.
To complete the digression (from the same Wiki):
... the wine often receives mixed opinions with wine experts ... describing in The World Atlas of Wine 'Est! Est!! Est!!!' ... as "usually the dullest white wine with the strangest name in the world."