Corn oil is cheap and available at costco. A sous vide is a fancy french name for a $150 device from target that keeps water at a specific temperature...
This "simple process" is much, much simpler than most meals one cooks at home. It's not much harder than microwaving something.
You are missing the point. With a small change in the way you do something, the really good thing can be made.
Sous vide are even cheaper now, $30 for a basic one, provided you've got a stock pot or something large enough to set it in.
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I read corn oil while I expect 3 star Michelin steak. What are we talking about oO