How much small beer supported Gibraltar's soldiers?

How much small beer would be needed to supply a soldier or sailor during the siege?

The figure offered from memory is roughly eight pints of small beer, or a spirits equivalent, per day at one point in the siege.

The figure is offered from memory rather than as a precise ration for every phase of the siege. Even with that caveat, roughly eight pints of small beer or an equivalent spirit ration conveys the scale of daily liquid demand. Alcoholic drinks supplemented rainwater and other limited sources rather than making the water problem disappear. The exchange helps translate Gibraltar's geography into the recurring burden of feeding and hydrating thousands of defenders.