Though it really is fog from dry ice. One cup had vegetable oil and the other water, I think we were wondering if oil would turn slushy like water does sometimes. It cooled down a lot but did not have any freezing effects. Perhaps there was just not enough dry ice in the cups. We had fun anyhow (this was Halloween-yes, 5 months ago).
Yea!!!!!!!!!!!! I won, it was a ghost making the oil fizzel! WOO-HOO!