ya I can't remember if it was taste it, or itemid. when you used to fill up kegs back in the day, it would say, A green Liquid.
if you didn't use tasteid or itemid you weren't sure if you where buying Poison, greater poison, or deadly poison.
you could probably use it to see if Food Was Poisoned before you ate it also. For Fun we take out Gm Poisoner and there are some foods you cast with Create Food, that you can Deadly poison. Lay it around Luna Bank, watch people run around trying to cure each other