How do I make an Ice Cream cake last more than hour outside a freezer?

[UnrealCaker]

Hi I'm new here and just curious, I want to make an ice cream cake and bring it to school but I'm afraid it will melt before I even get off the train. Anyone know how to make an ice cream cake last outside a freezer for more than hour. I live in NYC and it's winter time.

[JudiAU]

Dry ice.

[UnrealCaker]

Where can I get dry ice? It seems every ice maker suppler is too far away from where I live to be worth the travel

[gmm]

In my area some grocery stores carry it.

[greygarious]

Regular ice will be fine, if you can manage the extra weight.
I would put water into empty plastic bottles, leaving some room for expansion before capping, and freeze them. A solid "block" of ice like that will retain cold longer than ice cubes will, and there is no danger of leakage. You'll need to transport cake and ice in an insulated cooler.

[goodhealthgourmet]

set it in a cooler with dry ice or some of those freezer gel packs.

[gmm]

The only way I can think of is to pack it in a cooler with some dry ice.

http://www.airgasdryice.net/pdfs/peng...