Brewing methods are standardized to maximize efficiency, and commercial beer is brewed in factories ... and energy involved in the production process is certainly higher. That said, there's ...

Commercial brewers make sure that beer production is as efficient as possible ... only possible in batches rather than by a continuous process. A production process like this is called batch ...

This has the disadvantage that production is only possible in batches rather than by a continuous process. A production process like this is called batch processing.