7 of 7

LESSON 3 · Kitchen Chemistry

Fermentation in Modern Life

Fermentation is not just history — it is cutting-edge science and daily necessity:

  • Biofuel production uses yeast to ferment corn or sugarcane into ethanol fuel.
  • Pharmaceutical companies use engineered bacteria to ferment insulin and other drugs.
  • Gut health depends on fermented foods feeding your microbiome with beneficial bacteria.
  • Flavor development in cheese, soy sauce, miso, and fish sauce all require months of controlled fermentation.
  • Industrial biotechnology ferments microbes to produce everything from vitamins to biodegradable plastics.