I've made more than enough pomme souffles to understand how they work. The problem is that not all potatoes puff and I'm looking for a more sure/cost effective way. The reason I tried the f50 was because we use that solution on the restaruant to seal ravioli and it works great. My thought would be to seal the edges and allow the air to puff the potatoes but the seal always breaks. Look at the link I provided in my original post to see a different way. I have the modernist cusine book, the problem is I don't know how to check for moisture content in potatoes.