Koolada (menthyl methyl lactate) is used specifically to give that "cold" feeling at the back of the mouth.
It does not really have a 'taste', but it can be used in conjunction with menthol.
try using 4 drops per 4ml of eliquid.
Posted by MUHAMMAD SHAMSUL HADI M TAHA on 5th Aug 2015
Good option for giving tingling sensation on the throat