To put it in simple terms, Savor says they take carbon dioxide from the air and hydrogen from water, heat them up, oxidize them and get a final result that looks like candle wax but is in fact fat molecules like those in beef, cheese or vegetable oils.

So their process sounds like it creates synthetic lard, not butter. This can still be a good thing as the extra ingredients to make it “butter” aren’t really the hard/impactful part of butter.