This festive, simple and utterly over-the-top roast tenderloin is one of chef James Petrakis's indispensable holiday dishes, though he often makes it with venison instead of beef. Petrakis co-owns The Ravenous Pig in Winter Park, Florida, with his wife, Julie Petrakis, the restaurant's pastry chef, and admits that her desserts have become "the most essential part" of their annual feast.