Hello everyone! In preparation for summer I thought it appropriate to put together this DIY ice cream cold plate project which turned out surprisingly easy and effective. The whole process is demonstrated in the embedded video above, and a written description will follow. If the embedded video does not work for you on mobile here is a direct link to the video on YouTube.
An ice cream cold plate is used to rapidly freeze and mix ice cream moments before it's served. It's a great method for making custom flavors on the fly as the ice cream can be made in individual portions then immediately scraped clean to start again.
First things first, here's a list of all the items used.
Ice Cream Recipe:
The first step in assembling the cold plate is to place a towel below a large baking pan to insulate it from the table. This will serve to both protect the table from the extreme cold and will also increase the efficiency of the cold plate.
A block of dry ice is then placed in the center of the pan, approximately 3-5 lbs should be adequate. A second towel now covers the block of ice and should be tucked into the baking pan to keep the block centered. This further improves efficiency by insulating the sides of the dry ice and will prevent the cold plate's surface from sliding around when the ice cream is being made. The towel I'm using to cover the block in the above images is perhaps a bit excessive, a small hand towel one or two layers thick over the block should be fine.
To increase the rate at which the dry ice is able to cool the surface of the cold plate the section of the towel directly on top of the dry ice is wet with some high proof vodka (100 proof or better) or rubbing alcohol. Alcohol of one kind or another must be used for this step as water would freeze and reduce the effectiveness. If rubbing alcohol is used care should be taken to avoid getting it into the ice cream as it is non edible.
The final step is to set the frying pan on top of the now moistened towel. It should begin cooling off quickly but in the meantime it's a good time to stop and make the ice cream mix.