Chapter 4

Brewers Yeast

Ale Yeast

Ale yeast strains are best used at temperatures ranging from 10 to 25ºC, though some strains will not actively ferment below 12ºC (33). Ale yeasts are generally regarded as top-fermenting yeasts since they rise to the surface during fermentation, creating a very thick, rich yeast head. That is why the term "top-fermenting" is associated with ale yeasts. Fermentation by ale yeasts at these relatively warmer temperatures produces a beer high in esters, which many regard as a distinctive character of ale beers.

Click on the following topics for more information on beer yeast.

Related Topics on Brewers Yeast

• Introduction to Brewers Yeast
• Ale Yeast
• Lager Yeast
• Yeast Life Cycle During the Beer Brewing Process
• Yeast Nutritional Requirements in Brewing Beer
• Yeast Byproducts in Brewing Beer
• Yeast Selection in Brewing Beer
• Yeast Pure Cultures
• Maintenance of Harvested Yeast in Brewing Beer
• Yeast Viability and Replacement in Brewing Beer
• References