A perfectly normal red apple. For sailors to eat to avoid scurvy, and also the White Dragon's principal cargo. Apples are also the chief export of Ge'en. When April needs a distraction aboard the White Dragon, an apple and a small worm forcibly removed from its favourite flour sack works a beaut.
When April retrieves it from the barrel, she leans into the barrel and asks: "Jim?" This is a reference to Robert Louis Stevenson's Treasure Island, where Jim, the cabin boy, hides in an apple barrel.
Obtained from the barrel on the deck of the White Dragon.