Source: CNBC 

Rick Berman has been involved in some of the most controversial corporate PR campaigns in history, including work for the tobacco industry.

The Center for Consumer Freedom, an advocacy group Berman runs, has been upping its attacks on the science behind plant-based proteins in the past few months. Its latest: a Super Bowl commercial alleging plant-based meats contain methylcellulose, a chemical laxative.

Impossible Foods immediately shot back with a mock ad featuring its CEO Pat Brown, claiming there’s “poop in the ground beef we make from cows.”