I noticed a new quest in Korthos when I made a new toon to test total favor earned as a possible way to earn renown. Haven't hit any benchmarks to know yet so don't ask.
But in the bar, AFTER you complete the bar quest, there is an NPC on the across the bar from the bartender.
The only thing she gives you is a quest to bring some Old Sullys Vintage Grog, HERE's the catch. The grog is ONLY avail via the DDO Store (none in stock when I checked)
You turn in the grog to an NPC on Korthos dock for a Siberys Rez Cake. Until they put the Grog on the DDO store, will never know if it's cheaper than a normal rez cake or not.