I know I'm a few days late but there was no discussion about this yet, so...
Had a good laugh about the comments on this. "Disgusting", "Ew, wouldn't put the chemicals these things have in my mouth". Some people are just too stupid to do research. Someone should show the stuff put into their sausages.
Where does normal beef come from? Cow
Where does lab-grown beef come from? Cow
The main difference really just is that the animal doesn't need to be killed to get meat. This specific beef had way less additives than the ones in grocery stores, if any.
When it becomes more reasonably priced to make these, I'll be among the first to buy.