Supply Lines

Butter Made From CO2 Is Coming as Startups Chase New Fat Sources

A cow at a dairy farm in Anand district, Gujarat, India, 2022

Photographer: Dhiraj Singh/Bloomberg

Bill Gates tasted it earlier this year and couldn’t believe it wasn’t real butter.

Now, the spreadable fat that’s made without cow’s milk — and through a process using carbon dioxide — is getting ready to hit American restaurants.