The way you prepare this special mixture is as follows. Mix the water vinegar and salt in the glass and place the glass somewhere out of sight, but certainly not in a place where you could knock it over or walk over it by accident. Furthermore, it is important that you place the glass in a place where you spend a lot of time every day and leave it there for 24 hours.
After the glass has been standing in your room for 24 hours, you should measure the salinity in the glass. If the salinity in the glass appears to have risen, then you should repeat this process until the salinity decreases. Is this a handy tip you would like to use yourself sometime? Share it with your friends and maybe they could use it too.