How does yeast survive without any food or water without dying for years in a pantry, then you just add water and sugar and it comes to life and creates air. Is it unetical to cook them alive? Do they feel pain? If people are mad about lobsters being cooked alive why do we still cook yeast alive?
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Yeast is alive. When it dries out it forms spores (like seeds), that “sprout” when they get wet again.
When you rehydrate the yeast, they wake up. They can eat sugar, which they break down into carbon dioxide (the bubbles you see).
I don’t know of any philosophy that considers it unethical to kill micro-organisms, or fungi more generally.
They are single-called organisms. They have no nervous system to sense something like pain.
People think differently about animals than they do about plants and fungi. Lobsters have brains and are thought to sense pain.
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