After the party-heavy holiday season, you may need hair of the dog. For our first antioxidant-rich Fresh Start recipe from the Test Kitchen, we've essentially infused grapefruit--high in lycopene and vitamins A and C--with the makings of a Margarita: tequila blanco, tangerine juice, Cointreau or Grand Marnier, and agave syrup. After a quick maceration, the tart, boozy citrus fruit takes center stage in a salad with avocado, Asian pear and fresh mint. A cocktail masquerading as a salad? It is a New Year.