Joao Pato (Duckman) Maria Duck Pet Nat

From 25 year old vines planted to several plots of chalky-clay soils, within two sites called São Lourenço and Óis do Bairro. The grapes are vineyard sorted with hand-harvesting at the end of August. Fermentation takes place in stainless steel, lasts for three weeks and is vinified using the traditional method. A liquor de tirage of 1.6gr plus sweet wine is added. The wine is aged for six years on the lees in bottle and is given a dosage of 1.6gr/L at disgorgement in December 2018. Not fined or filtered.