Soy sauce citric acid and penicillin all come from?

* Soy sauce: Made through fermentation of soybeans and wheat with a specific type of mold called *Aspergillus oryzae*.

* Citric acid: Often produced using a fermentation process with the fungus *Aspergillus niger*.

* Penicillin: This antibiotic is produced by the mold *Penicillium chrysogenum* in a fermentation process.

While these products come from different sources, they all rely on the same fundamental process: fermentation. This involves using microorganisms like bacteria, yeasts, or molds to break down organic materials and create new products.