[madpata]

> cooking techniques that assume cheaply-available vacuum

That also assumes that the atmosphere you're venting for that "cheap vacuum" is cheap as well.

[hypertele-Xii]

You don't have to vent. You can just compress into storage.

[Negitivefrags]

So to get your cheap vaccuum you first have to make a vacuum in a chamber by sucking the air out before opening it to space? You can just skip the open it to space part and do it on earth!