How do the aging methods of Tawny and Vintage Ports differ?

Tawny ports, on the other hand, go through oxidative aging in oak barrels and end up with nutty flavors and a chestnut-like color after some years. On the contrary, Tawny Vintage Ports are cask aged, with a little amount of oxidation and so, the intense fruit flavors and dark color remain during their whole long life. The related tannins of the Tawny Ports blend perfectly with the wine in bottle ageing, while during this process the Vintage Ports soften their tannin levels and integrate their flavors. All types of ageing processes, either wood or iron, uniquely impart distinctive features which become an inseparable part of the character of the world-proclaimed styles of Port wine.