Iirc it has to be sealed and new to get past security as long as they notice it, but I may be misremembering. I've never been able to bring food or drinks
Foods I've flown with:
Apples
Two sub sandwiches
100 fresh tortillas
An entire 20lb uncooked brisket
3 loaves of bread
A frozen 8lb pork roast
I'm pretty surprised they're ok with frozen stuff, but yea, never had any issues bringing entire bags full of food, raw or prepared, packaged or not.
You can’t take a big jug of water through security unless it’s frozen because the rule prohibits liquids, not solids.
And this is flying through hundreds of airports, not just major coastal ones...
This idea would work best for soups that are good to eat cold, of course, but those do exist.