Tonight I intend to initiate my new wine glass with one of the three bottles included in our gift basket.....Chardonnay, Cranberry, or St. Croix Grape.
The ancient wine has quite a bit of silty sediment, about 2/3rds a thick, hazy mixture. This is most probably olive oil, which the Romans commonly used to 'float' on top of wine to keep it from deteriorating. Although corks were known to exist at the time, they were uncommon. This method of oil preservation was apparently effective enough to keep the wine from evaporation even up to modern day.
If you're ever in Speyer, Germany, the bottle is on display at the Historisches Museum der Pfaltz.