(April 13, 2022, 1:39 PM EDT) -- SAN FRANCISCO — A plaintiff claims in a putative class action filed on April 11 in the U.S. District Court for the Northern District of California that Burger King Corp. violated California’s unfair competition law (UCL) and other statutes by fraudulently concealing from customers that the packaging for its Whopper burger is made with per- and polyfluoralkyl substances (PFAS) that he says renders the Whopper “unfit for human consumption.”...