Quite simply - New drink recipe - Taste it so you know what it tastes like.
If a consumer calls for a drink that you have never made/heard of and they
know the recipe, make it and taste it.
Once you are 100% confident you can make the drink perfect every time, do not
taste it.
That is the way I was trained and it is the way I train.
Hope that settles everything!
Cheers,
Adam
--
Bar Consultancy, Training and Events
http://www.evo-lution.org