There are some sketchy chicken dishes, like the subway chicken, who have claimed to be about half soy, although subway disputes it. But at least in terms of be

There are some sketchy chicken dishes, like the subway chicken, who have claimed to be about half soy, although subway disputes it. But at least in terms of beef, I couldn't find a company in the top 5-6 fast food burgers that don't claim 100% beef.