Does pitch + sand work for a quick mold for aluminum?

I'm kinda new to this foundry hobby and don't really have experience with making molds, I've melted some metals to make random alloys for fun but I haven't tried making any real pieces yet. I've seen some videos where they mixed sand with a black liquid and it hardened into a usable mold, but I'm not sure if that ooze was hot pitch or something else.

Can someone tell me if this mixture works? or if that mixture is actually something else?