I think it depends on the surface that is being chilled. They use dry ice for duck skin since it is pan seared, the cooling is applied in a similar manner as the heating.conversely the hamburger is deep fried, and a dunk in ln2 would be theoppositemethod of chilling to submerging something into extremely hot oil. So if you pan seared one side of the burger at a time after chilling it on a block of dry ice you could possibly get similar results. I doubt that it would work out as well though.