I'm a bit confused as to the source of the fizz. I've heard that it's just "residual" CO2 left over from the fermentation process, and it is bottled before it is released. I've also heard that CO2 is injected into the wine. Perhaps both of these are true, and the real answer depends on the winery?
Anyhow, this wine is certainly fresh and fruity. The main scent/flavour for me is pear. And green grass. Two native Iberian grape varieties are used: Loureiro and Arinto.
Incidentally, this is the winery that produces Saddam Hussein's (allegedly) favourite wine: Matéus Rosé.
Quinta de Azevedo Vinho Verde 2008
£5.19 (20% off)