Chris Agerton (http://www.youtube.com/user/cagerton) suggested that I try adding nitrous oxide bubbles to an avocado -- a wonderful idea since avocados are fatty, and the gas should readily dissolve in the fat. I placed some avocado slices in my pressure chamber and dispensed two nitrous cartridges into the chamber. I let it sit for about 7 hours. I then took the slices out, and reduced the pressure with a vacuum pump. Unfortunately, the avocado was resistant to the nitrous infusion process. I will try again with guacamole and shaking/stirring to encourage gas absorption.