Here we have a GooTube, purchased from EMS.
It contains Hot Sauce, an essential cooking element. Since it seems like a dicey thing to carry, testing it under pressure using a marble mortar and pestle seemed appropriate. Although if you squeeze it when empty, the air gets out/in, it shows no indication of leaking the hot sauce. It might not be trustworthy under the pressure changes experienced in the cargo hold of an airplane, so it will be placed in a ziplock pre-fight.