'm always asked what wine I'd bring to a desert island and I always answer the same way: Madeira. It might even be my death row wine.
Madeira is one of the greatest wines in the world and rarely gets any respect. Most think (wrongly) that Madeira is a very sweet wine. Even the sweetest versions have really high acidity so they come off less sweet than other fortified wines.
It's an extremely opportune time to pay homage to my desert island wine because of its ties to the 4th of July. Thomas Jefferson (a serious oenophile) was a huge fan and the founding fathers toasted with a bottle after they signed a little thing called The Declaration of Indepedence back in 1776.