Combine rum and brandy, shake with ice and serve with caution. Note that this is purported to be a colonial cocktail, well before the invention of the modern cocktail glass. If you drink a pint of this in a colonial pewter mug, well, you've nobody to blame but yourself. If you do, I suggest you opt for a colonial means of getting home, perhaps a patient old dray-horse rather than your own late-model Mustang.