With summer on its way, JANE MACQUITTY picks her favourite summer drinks, and also recommends 2004 Spy Mountain Sauvignon Blanc (down 3 to 4.99 until 31 May; Sainsbury's); 2003 Misiones de Rengo Carmenre (down 1.50 to 3.49 until 17 May; Somerfield); and 2003 Warwick Estate Chardonnay (8.99; Waitrose).