"food cooked using cooking techniques that assume cheaply-available vacuum " - what would those be? Vacuum isn't something that's hard to get if you need it, a

"food cooked using cooking techniques that assume cheaply-available vacuum " - what would those be? Vacuum isn't something that's hard to get if you need it, all you need is a motor driving a pump, so if any industrial food process or one of the fancy restaurant chefs would have a good use for it, they would be already using vacuum in cooking. A kitchen vacuum sealer is <100$ (I'm assuming that would count as "cheaply available"), and it's not particularly useful though for most other cooking purposes that come to mind.