Perhaps its origin is a clue. It's from the Elqui Valley, which is among the highest (and therefore coolest) of Chile's vineyards. I am a big fan of Syrah from this region, and it's basically the reason I took a chance on this wine.
So, I encourage you to give this a try while it's on offer. This is good competition for Marlborough, New Zealand wines.
Castillo de Molina Sauvignon Blanc Reserva 2009
Elqui Valley, Chile
£7.99 (£6.39 when you buy 2 or more)