What year did James Baverstock begin using a hydrometer for brewing?

James Baverstock is recognized for utilizing a hydrometer in brewing practices, particularly in the context of improving the accuracy of measuring specific gravity, which is pivotal in determining the potential alcohol content and fermentation process of beer. In 1768, he advanced the use of the hydrometer, marking a significant development in brewing science. This innovation allowed brewers to assess the sugar content of their wort, resulting in more consistent and higher-quality beers.

Other years listed do not correspond with Baverstock’s documented use of the hydrometer. Thus, the context of brewing innovation in the 18th century aligns with the correct option, showcasing how this tool enhanced the precision of brewing techniques drastically compared to earlier methodologies.