I am very partial to very old Madeiras. Because the wine is already oxidised, it improves rather than deteriorates over time. I have enjoyed a pre-French Revolution 1789, an 1815 ‘Waterloo,’ and an 1824 Malmsey, laid down while Thomas Jefferson was still alive. I have just acquired an 1885 Bual, the year when the Marquis of Salisbury first became Prime Minister of the United Kingdom. I intend to share it next week with a handful of friends.