Ice cream, rum, and naval barter in the wartime Pacific

What was the wartime Pacific exchange between US Navy ice cream and Royal Navy rum like?

An active barter is recalled, but the exchange ratio is uncertain and varied with circumstances; American destroyers also bargained for ice cream after rescuing carrier pilots.

The exchange ratio between ice cream and rum is not known here, and the value of cold refreshments is expected to vary with the season. A vigorous trade in ice cream and alcohol between American and British ships is recalled. American destroyers could bargain with carriers for ice cream after rescuing their aviators. The comparison also jokes that British carriers sometimes went to recover their own pilots, leaving destroyers without the same bargaining opportunity.