How can I carry Kombucha Tea on an aircraft without having it leak because of air pressure?
To avoid leakage from a vessel during decompression, use a container that can shrink with the external pressure and expand with the internal pressure. A plastic bottle, such as a ginger ale bottle will work just fine as long as you fill it right up to the top and not leave any air-space. While liquid is incompressible and does not change volume with external pressure changes; air space in the bottle will react to changes in external pressure. A completely full bottle will not react to the changes in altitude.
