%0 Journal Article %A E. B. Roessler %A M. A. Amerine %T The "Age" of Madeiras %D 1973 %R 10.5344/ajev.1973.24.4.176 %J American Journal of Enology and Viticulture %P 176-177 %V 24 %N 4 %X The average age of wine in a single-barrel solera where p is the proportion of draw-off per period approaches a limiting value 1/p as the number of periods increases, and for a wine N years old to remain N years old, the proportion of draw-off must equal 1/N. These expressions are used to compare actual ages with those claimed for Madeiras offered for sale. %U https://www.ajevonline.org/content/ajev/24/4/176.full.pdf