It looks like both sassafras oil (Sassafras albidum) and safrole are prohibited from being added to foods in Canada: https://www.canada.ca/en/health-canada/services/food-nutriti...

I was able to find another article (https://www.thestar.com/news/canada/2020/06/27/cheers-to-cro...) where Belding confirms that his modern Cronk will not contain safrole:

> “Sassafras is a precursor for narcotic manufacturing, and there’s an ingredient in it that is carcinogenic” he says, meaning cancer causing. He stresses that they’re tracking some down that won’t have that ingredient in it.