For the busy bees out there, the quick answer is: Yeast is a Fungus and since Fungus is not an animal, Yeast is considered to be vegan. More details are provided below.
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In order to answer our question – “Is yeast vegan?”, we need to answer the following questions…
- Who is a vegan?
- What is yeast?
Definition of Vegan as per Oxford dictionary is “A person who does not eat or use animal products.” 1
Definition of Yeast as per Oxford dictionary is “A microscopic fungus consisting of single oval cells that reproduce by budding, and are capable of converting sugar into alcohol and carbon dioxide.” 2
The next question we need answer for is – “Is fungus an animal?”
All living beings have been classified into 5 different ‘Kingdoms’ as per the Five kingdom classification system. 3
As we can clearly see, Fungus and Animals are two different kingdoms altogether. i.e. Fungus is not an animal.
Since Fungus is not an animal, Yeast is considered to be vegan.