Answer: mickeyfinn

AnswerCrossword Clue
MICKEYFINNDrugged drink
MICKEYFINNPotent potable
MICKEYFINNChicanery by the glass.
MICKEYFINNKnockout potion.
MICKEYFINNLoaded cocktail
MICKEYFINNIt'll knock you out after you knock it back