It's a 1% fee intended to help fight climate change.
According to SF Eater, the effort is part of a collaboration called "Restore California" aimed at helping local farmers implement climate beneficial farming practices.
RELATED: 2010s hottest decade ever, 2019 2nd warmest year, US agencies say
The group hopes to generate $10 million this year. However, the surcharge is optional and diners can have it removed from their bill.