Gelzen was founded in 2015 to sustainably produce animal-free gelatin for use in food, pharmaceutical, and cosmetic products. The San Francisco-based company seeks to supply the overwhelming demand for gelatin, which is currently made from animal peptides and proteins (skins, bones, and other animal by-products). By taking the machinery that builds collagen in animals and moving it into microbes, Gelzen is able to provide a customizable, cost-competitive, safe, animal-free and environmentally friendly product. As an example, the team has demonstrated this method by using de-extincted mastodon collagen to produce mastodon gummy candies.