For piercing, ultra-fresh Sauvignon, Elqui Valley is a top spot. It’s an extraordinary region in the north of Chile next to the Atacama desert. Thanks to snowmelt from the Andes and the wonders of irrigation, green and flourishing vineyards stand out in contrast to their lunar-like surroundings. Alta Tierra is from Viña Falernia, owned by cousins Aldo Olivier and Giorgio Flessati. They have 135 hectares of beautifully manicured vineyards and an ultra-modern cellar. In 2005 their first vintage won a Trophy and put Elqui on the map. This dazzling Sauvignon Blanc displays classic varietal character of elderflower and freshly mown grass with ripe melon and citrus fruit. Enjoy on its own or partner with spicy Asian dishes or fish.

Winemaker Jean-Marc Sauboua has made wine all over the world. He's won loads of prizes too. But Bordeaux was where he was born and raised and where he's searched out the grapes for this snappy fresh white. He's worked with an award-winning ecological cellar on Bordeaux's Right Bank, Les Vignerons de Tutiac in the Côtes de Bordeaux. This is where you'll find some excellent clarets, but Jean-Marc was out to prove that white grapes could perform just as well. It's pure Sauvignon Blanc, taken from a variety of vineyards in both Côtes de Bourg and Blaye, each parcel contributing a different character to the wine. Bright, lemony and intense, it's an elegant white, as you'd expect from Bordeaux. Chill and serve with panfried white fish or solo.

Reuilly is a real gem for lovers of classic Loire Sauvignon. It offers the dazzling mineral finesse of nearby Sancerre and Pouilly-Fumé, but its wines come at a more affordable price. It's a bit of a rescue story, in fact. In the 1970s, its wines almost disappeared and the little that was produced was only enjoyed locally. Enter Claude Lafond – the saviour of Reuilly. He encouraged the planting of vines, established a shared winemaking facility for all Reuilly producers, and built an impressive, modern winery at Domaine Claude Lafond.

Now run by his daughter, Nathalie, the domaine is farmed organically and continues to go from strength to strength – just like Reuilly itself. La Raie is crisp and elegant. Ideal with goat's cheese.