Will whale-fossil beer really taste that different from other brews? Perhaps not. The species of yeast Osborne and his brewing partners found on their fossil was the same species that commonly goes into beer, bread and even scientific studies. The yeast's scientific name is Saccharomyces cerevisiae. The whale-fossil S. cerevisiae might have drifted over from another lab, if there was a yeast lab nearby. Scientists consider such yeast domesticated, like dogs and sheep are. Like pets and livestock, people have bred and worked such yeasts for thousands of years.