Scalding with a Rocket Stove?

I ran across this post: https://permies.com/t/36208/rocket-stoves/Rocket-Scalder, but my engineering skills are lacking to assist my imagination to figure out how to complete such a build.

Does anyone have further information about using a rocket mass stove to heat water to the point of using it as a scalder for poultry that will be processed in a plucker machine?

Thanks in advance,

Jared