A California-based startup called Savor has figured out a unique way to make a butter alternative that doesn’t involve livestock, plants, or even displacing land. Their butter is produced from synthetic fat made using carbon dioxide and hydrogen, and the best part is —- it tastes just like regular butter.

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[–] BehindTheBarrier@programming.dev 11 points 3 months ago* (last edited 3 months ago)

If CO2 is a byproduct of another process, then I'd make a guess it is fairly cheap. The flaw here is that CO2 and H2 are both products of steam reforming using methane... Which is to say, the cheaper version might just come from using natural gas. Hydrogen has to be sourced from some energy consuming process, and that too is often from the methane steam reformation. So it's certainly possible, but yet again is ready to become yet another "green" product made from fossil fuel. Doesn't have to be, but I can be.

Edit: to correct a discrepancy, the article mentioned hydrogen, but if the hydrgon comes from water used in the process then some of the issues of providing H2 is less big. But either way I expect this to be energy costly. Nevertheless, a lab made product is still something that doesn't need large areas of land to produce.