More interesting summer whites from Spain, Portugal, and Hungary

At last month's Port4lio Tasting in San Francisco, I had the opportunity to taste some delicious white wines made from uncommon grapes. Here are the three that I found the most distinctive:

• 2010 Raventós i Blanc Silencis: the wine is 100% Xarel-lo, a Spanish grape variety from Catalonia. Although Xarel-lo is mainly used with Macabeu and Parellada in Cava production, it is sometimes used alone in still wines. Located in the Penedès wine region, south west of Barcelona, Bodegas Raventós i Blanc was founded in 1986 by Josep Raventós Blanc, a member of the Codorníu family. The family-run, quality-oriented winery owns 90 acres of vineyards, planted mostly to local varieties such as Macabeo, Xarel-lo, and Parellada, on rocky, chalky soil high in limestone content (like Champagne). The wine has a pale yellow color and a mineral nose of crushed seashells. On the palate, it is dry and quite earthy with a long distinctive finish.

• 2010 Trajarinho Vinho Verde: the wine is a blend of Trajadura and Alvarinho, two native grape varietals of the Iberian Peninsula. In Portugal, they are mainly found in the Vinho Verde region in the northern part of the country. Low in alcohol (11.5%), the wine has a light golden color and an attractive floral nose. On the palate, it is rather dry, slightly fizzy with lemon aromas and a refreshing finish.

• 2009 Bott Hárslevelu Határi: Hárslevelu is generally blended with Furmint to produce Tokaji Aszú in the Tokaj-Hegyalja region of Hungary but in this wine, it is vinified as a pure varietal dry wine. Határi is one of the top vineyards in Tokaj and the small, family-run Bott winery maintains 1.5 ha of vines there, planted on a rocky, volcanic terraced slope. The wine has a light yellow color and an unusual nose of aromatic herbs (thyme, rosemary). On the palate, it has a great mid-palate mouthfeel with notes of rose petal on the finish.

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