This Tawny 20 Years Old is made from 30% Touriga Nacional, 30% Tinta Roriz, 30% Touriga Franca and 10% TInta Barroca grapes. This so-called Aged Tawny is one of the most difficult ports to create. It is composed of ports from different harvest years and only blended and bottled after years of barrel maturation. It starts with a selection of wines after every harvest. These are brought to the barrel and then each time tasted and finally blended into a perfect port.