Since opening almost a year ago, Prime Blue Grille has attracted a steady stream of clientele hungry for veal chops, short ribs, rack of lamb, and seven cuts of steak seared upon an 1,800-degree hickory-burning grill. Even more types of seafood are available, from yellowfin tuna to whole branzino to wild Alaskan king salmon — also freshly grilled. Eighteen side dishes — roasted Brussels sprouts, truffled mash, prosciutto and fontina potato gratin — make decisions agonizing. Flatbread pizzas are popular, too, served sizzling from an oak-fired oven. In other words, Prime Blue appeals to all downtown diners for lunch and dinner, and to those who want their steak without the hormones: Only Brandt corn-fed, all-natural prime beef is used. All seafood is caught wild. (Steaks run $23 to $38, seafoods swim in the upper $20 to lower $30 stream). And as for those omnipotent Miami businesspeople, general manager Jamie Zambrana says the restaurant's private dining rooms "are used almost every day for power lunch meetings and closing multimillion- and billion-dollar business deals." You know, for the really high-priced escort services.