Scientists can insert genes into bacteria, yeast, and algae, to create desired proteins. These proteins are then used as additives in the food supply, as components of supplements, as flavorings, and as drugs.
Early application of this form of synthetic biology demonstrated its potential to create deadly impurities in the final product. The Impossible Burger is an example of a modern food created from engineered yeast, that carries unique risks and dangerous unknowns. There is a growing list of other “synbio” products entering the food supply, cosmetics, and products of other industries.