Something Rotten (Main Quest)
One of the three ritual quests given to you in Aaru, to appease Nefertiti. This location actually moves about the realm by reedship, so use your quest marker and Senu's eyes to track it down.
As with mortal boats, you can climb up the aft of the vessel for an ideal sniping and or assassination vantage. Alternately, a fire arrow into the food pile will also do the trick.
Either way, the mission completes once the food has been set aflame.