evidence: The Impossible Whopper is a burger with a patty made from plants, including soy, instead of beef. And that's where the issue comes in. He said that the soy in the Impossible burger has 18 Million times more estrogen than regular beef. "The impossible whopper has 44 mg of estrogen and the whopper has 2.5 ng of estrogen," he explained to the Western Journal. "Now let me refresh your metric system. There are 1 million nanograms (ng) in one milligram (mg). That means an impossible whopper has 18 million times as much estrogen as a regular whopper."