Guy Fieri's looking for a classic and favorite flavor combination: sweet and sour. Chef Rocco DiSpirito takes the main stage with his Maine Lobster Peperonata and makes sure your eyes won't glaze over with Glazed Beets Agro Dolce with Ricotta Salata. Chef Aaron May hits the right note with a Key Lime Pisco Sour before giving us his Grilled Quail with Pomegranate and reminding us that life is sweet with a Grapefruit Brûlée Tartlette. Hunter Fieri stuns with some Sweet 'N Sour Chicken Wings and busts out his Balsamic Brussels Sprouts with Maple Bacon and Parmesan.