If you've always wondered how to swing that witches' brew vapor effect, we've got all the tricks
You don't need eye of newt or wing of bat to brew a batch of toil and trouble this Halloween. All you need is some dry ice. This magic ingredient turns an ordinary punch bowl into a bubbling, smoldering cauldron that's perfect for parties.
Dry ice is basically frozen carbon dioxide. Adding water changes it from a solid into a gas, creating a dense fog. It's a cheap and no-fuss special effect. Most grocery stores sell blocks of dry ice, although some carry pellets instead. Either will work.
As long as you're careful, you won't run into any problems using dry ice. But it's about -110 degrees F, so dry ice can cause injuries if you touch or ingest it. Be sure to use it in a well-ventilated area and keep it out of reach of pets and small children.
Wear thick work gloves when opening the package of dry ice. (Kitchen gloves are too thin.)
Place the block of dry ice on a towel. Use a wooden or plastic work surface, as dry ice can crack tiles.
Wrap a towel around the block, then break it into chunks using a hammer.
Be sure both of the bowls you use are plastic or metal since dry ice can crack glass. Put any unused dry ice in an open plastic container and store it in a cooler filled with ice. Never store it in the refrigerator or freezer.
Five pounds of dry ice will last about an hour. Keeping a nearby fan on low will intensify the effect.