|  |  | There are four types of Port wine: white, red, ruby and tawny. White 
Port gets darker with age, whereas the older reds are paler in color. 
All Ports spend a minimum of a few years maturing in casks before being 
bottled. Old Ports, those of  10, 20 and 30 years are in fact blends of 
wines of different ages. The age on the bottle is the average age of the 
contents, Only vintage Ports mature in the bottle. Vintages are only declared in certain years when the harvest is condiered 
by the Port Wine Institute to be of sufficiently high quality. A bottle 
of vintage Port should be stored away from the light, and on its side to 
prevent the cork drying out. Once opened vintage Port should be consumed 
within 48 hours.
 
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