Port wine

Port wine is a fortified wine based on grapes grown in the Douro Valley region of Portugal. Its notable stability in storage has long made it a favourite of the seafarers of Britain, in addition to its not being French.

Fire control makes much more sense with a vintage port uncorked and ready. Ruby, late bottle vintage and tawny varieties offer lesser insights in the subject, but generally enough to grant a basic grasp of the fire control practices of inshore nations.