Ale Yeast (Saccharomyces cerevisiae) Fermentation Temperature Higher temperatures (typically 15-24 °C or 59-75 °F). Fermentation Behavior Top-fermenting; rises to the surface. Flavor Profile Produces a wider range of esters and phenols, leading to fruity, spicy, and estery flavors. Application Used in the production of ales, stouts, porters, and other top-fermented beers.