Gallo Frantic in Avestrue would like you to retrieve a lost package for him. He offers you four Thalers for it, and if you inquire about it, he will tell you that it's a parcel of his favorite pipe tobacco. On further inquiry he will admit, that it is actually A Tasty Delicacy, namely a Parcel of Candied Kosh Bunting Tongues. The parcel can be found along the road from Avestrue to the New Customs House, behind Brewin Rattlestone's wagon. After you have consumed the Kosh bunting tongues, Gallo Frantic will tell you that the parcel would have been worth around 50 Ducats.