The Feast of Initiation

On an inhospitable island with no outside trade, food is often a hardship from the plane-touched tieflings of Molthuth. Constant storms and a generally cold climate make more delicate crops almost impossible to grow, so tieflings learn to subsist on a simple, hearty, bland diet of saltwater fish, potatoes, coarse flour made from winter wheat, eggs from a particularly hardy northern breed of chicken, some milk and hard cheeses, and livestock meat. Green vegetables and fresh fruits beyond apples are nearly unknown on Molthuth.
As a result, the feast of initiation--a rite-of-passage celebration when a tiefling chooses to become an active member of the planewardens--represents perhaps the only time one can hope for finer, more nuanced food. Druids and mages across the island are able to grow very small crops of warmer-weather vegetables and fruits that require richer soil than Molthuth has to offer, but none of these crops are reliable enough to become a staple of anyone's diet. Instead, they are contributed towards the community feasts of initiation, which are usually timed around spring and fall equinoxes.
The feasts feature a lush diversity of foods for two meals--breakfast and dinner--for the family and closest friends of the soon-to-be planewarden. When possible, multiple feasts are combined so the entire community can participate, but even when they can't, it's customary to share at least a single bite of unusual food with everyone present. The person(s) of honor are not only allowed but actively encouraged to eat as much of the special food as they want, symbolic of accepting their community's goodwill and appreciation for the lifelong task ahead of protecting them. If there is insufficient rare crops for a feast, it is delayed rather than held with too little sustenance for those attending.
The centerpiece of the feast is the Dragon's Heart, a dish unique to Molthuth. It consists of an entire roasted bird (usually a large chicken, but occasionally a duck or small turkey) intricately stuffed with several layers of complementary flavors. The exact composition varies between locations and crop availabilities, but there is traditionally one layer made of tart grilled berries, which suffuse the meat and the neighboring layers both with flavor and an occasionally-unsettling array of colors. Other layers can include herbed twice-baked bread stuffed with melted cheese, spiced soft-boiled eggs marinated in savory sauce, a separately-baked sweet vegetable casserole, and a medley of roasted vegetables in every color. The challenge of crafting the Dragon's Heart is to maintain a thin but intact layer of meat between each section, keeping the flavors and contents apart until the meal is shared and carved open.