Sercial is one of the traditional Madeira grape offering the driest style from the island. The base wine is fortified to 17-20% and stored in ?estufas? which are heated to 45 degrees celsius for no less than 3 months.
This wine is then aged oxidatively in casks called Canteiro, usually on the top floor of the wine cellar, where the temperature is higher. Serical is the lightest, most acidic and delicate expression of Madeira that takes the longest to mature.