Another technology that has captured interest among brewers, especially large, high-volume producers, involves developing a wort with a specific gravity considerably higher than that used ordinarily. The concentrated wort, once made, can be diluted before or, more commonly, after fermentation. The net effect is an increase in brewing capacity and product throughput without having to incur addition capital expenses for equipment (e.g., mash tanks, lauter tanks, and fermentors). Moreover, the production of high-gravity worts reduces energy, labor, and effluent costs.Although high-gravity fermentations place extra demands on the yeast (e.g., the osmotic pressure and ethanol concentrations are higher), the quality of the beer is considered to be comparable to conventionally brewed beers.
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