Hocus Pocus quickly became a cult classic among many. It just goes with fall like PSL, UGGS and Halloween. But these little known facts make the movie that much more interesting.
Through out Hocus Pocus, The Sanderson sisters talk about cooking with margarine quite often. According to the movie, the sisters died, for the first time, in 1693. However, margarine wasn't even invented until the 1800s, with the discovery of margaric acid in 1813. So margarine wouldn't be available as a butter substitute until 1869. So what were The Sanderson sisters really using...?! Source