Ed McFarland isn't quite ready to open Caravelli's, but when his kiosk in the World Financial Center debuts for the season on April 7, he'll be offering something new: a lobster burger. The $15 sandwich is already served at Ed's Lobster Bar on Lafayette Street, and McFarland describes it as "cooked lobster meat that is ground, it is mixed with a little clarified butter, salt, pepper, and chive. It is grilled and served on a sesame bun with spicy mayo, lettuce, tomato, and red onion." The grilled yellowfin tuna sandwich and chilled seafood salad are other kiosk additions. Full menu here.