Broccoli soups are the best. I’ll take any, but Cream of Broccoli is incredible.
And they wouldn’t know about their crippling addiction to soup?
Not a chance
Ok, you start by fabricating a funnel that screws to the neck of the flask. It’s a bit of time on the lathe, but you only need to do it once.
Attach the funnel to the flask, and fill it with you soup of choice. Then place the entire contraption in your vacuum chamber and pump it down, slowly, to the lowest pressure it’ll manage. Don’t go quickly, or the soup will bubble out of the funnel, unless you made it particularly deep. Once you’ve evacuated the flask, and let the soup settle back down in the funnel, bring the pressure back up. At that point, the vacuum will suck the soup in to the flask. Once you’re back up to ambient pressure, detach the funnel, give the flask a wipe, close it and go about your day with a loaded soup flask.
Simple really.