imho, cold/chilled drinks are also very tedious things to shoot! have to get the 'frosting' just nice...wait too long and it start to 'sweat' liao
for those 'time-sensitive' food, probably a good idea to prepare 2 sets. 1 to set the angle and lighting right .. the 2nd to quickly replace and shoot. either that, or add in the 'time-sensitive' ingredient right at the last minute before shooting.
again, many ways to get ard the problem..hey, nobody ever said food photography is boring or easy yea? too bad i'm not much of a foodie myself..