Yep, the salad quest is where you are asked to free 3 vegetables from the curse of the mysterious Ursula. You have to find the carrot,the tomato and the pumpkin(it can be count as fruit also in some countries

). Each of them gives you the password to its own chamber in Prancing seahorse.Don't remember well which one is Gardner so if you tell me which of them you found i will try to tell you where is the missing one(have some memories that maybe Gardner is the carrot and he is located in the Trust inn(the tavern made as temporary barrack by the champions - on the plaza before the big talking tree) on the table near the fireplace).