It has taken years of experimentation by a crew of biologists, biochemists and engineers to turn that concept into a product ready to eat. Now the company is awaiting a greenlight from the Food and Drug Administration to begin selling its first cultivated meat products, including a chicken fillet.

After four years of talks with regulators at the FDA, Valeti anticipates this could happen "in the very near future." When it does, Upside's production facility in Emeryville, Calif., will be able to produce over 50,000 pounds of cultivated meat products per year.