What extra ration could Surgeon's Stewards receive?

Surgeon's Stewards, who were responsible for assisting surgeons on naval ships, were entitled to receive an alcohol ration in recognition of the demanding nature of their work and to provide relief during difficult conditions. This additional ration was particularly important in the context of the naval environment, where access to other comforts might be limited. The alcohol could serve not only as a morale booster but also as a means to prevent scurvy and other ailments common in long sea voyages when fresh supplies were scarce.

The other choices, such as chocolate, an extra meat ration, or coffee, were not specifically designated for Surgeon's Stewards. While these items might have been available in certain contexts, the alcohol ration was distinctly noted as a benefit connected to their role, making it the correct answer for this question.