Growing muscle, they noted, just requires taking the cells from skeletal muscles (the kind of meat we typically eat), isolating them, and affixing them to a scaffold that could help anchor them while they proliferate just as they would in an animal’s body. Those scaffolds could be made of collagen mesh or even microcarrier beads, all while being rotated in a bioreactor (a fancy word for a steel drum in which cell culture takes place) with electrical stimulation that keeps the cells exercising and warm.

