If you drive several hours over cobra infested road to you local Tesco and mistakenly return with a box of Mont Clair white* wine that is unfortunately several YEARS past it's batch date you will discover that it has aged into a somewhat passable** Madeira in both colour and bouquet.
* said white wine was only bought for cooking purposes because only girlymen and nancyboys drink white wine, as we well know.
Madeira on the other hand is a manly drink.
** If you drink enough of it in one go.....