After watching a few youtube videos I decided this style looked like what I was looking for. I hastily built a prototype tonight after work. Is is built from 3/4" pipe with 1/4" pipe inside the 3/4" barrel. The air is supplied via an air compressor with the regulator just barely cracked open. The paint can is just a temporary chip vessel. Something cheap I can experiment with air hole placement. I am looking for a better, more food safe solution. I'm thinking along the lines of a medium sized stock pot, or I may just build my own container from scratch. I want something I can load up and forget about for several hours at a time!
When I have a little more time, I will disassemble and take pictures of how it's constructed and write a better tutorial.