Acid: Wine needs it for balance. It makes your mouth salivate, cuts through fat and cream, keeps wines fresh, especially sweet ones, and helps the contents age gracefully in the bottle. But too much of it, and the drinking experience mimics sucking a tart, mouth-puckering lemon. Too little of it, and the wine tastes flabby, or flat, or even syrupy, like bad store-bought margarita mix.
Bright, zesty wines have long been considered the province of the Old World. Self-proclaimed “acid freaks” who love the crackling, electric tension (myself included, to the detriment of my teeth) track regions where high acid levels occur naturally. Chablis, Austria, Germany, and Northern Italy, for example, reliably produce laser-sharp, racy whites. But pH levels taken from a global pool of rieslings uncovered an interesting phenomenon: The semi-desert grape-growing region of the Okanagan Valley in British Columbia, Canada — the New World — delivered some of the lowest numbers ever recorded.
Acid, naturally occurring in grapes, diminishes as they ripen, especially in warm climates. The general backlash against the over-ripening of fruit, and trend toward picking earlier to create wines with “balance” (simplified: Less ripeness in grapes means lower sugar levels and higher acid, which makes lower-alcohol and higher-acid wines) is in full flower, but not all growers have the luxury of retaining acid levels naturally after fermentation. Wines from hot zones like South Australia and Central California often require an addition of tartaric acid (which comes as a big bag of white powder, and gets measured and dumped in like sugar in a cake recipe).
Let’s geek out for a moment on pH. This scale from zero to fourteen measures acidity versus alkalinity. A pH of seven is neutral. The higher the number, the more alkaline or basic the substance, like root vegetables. The lower the number, the more acidic the substance is, like apples. Most white wines fall between three to four pH; reds lean a bit higher, depending on the variety.
Riesling specialist Stuart Pigott ran a story on the variety’s range of pH levels in the December 2013 issue of Wine & Spirits. The lowest-pH wine he’d ever encountered in the world was “the off-dry 2012 Platinum from Cedar Creek in the Okanagan, with an astonishing pH 2.73.” He noted that “the only wines that sometimes match that figure are chardonnay base wines for Champagne, deliberately picked early to get that acid.”
You might be wondering why anyone would want to drink a wine with such a low pH if high acid levels equate to a jarring tartness. Well, sometimes you wouldn’t. Just as acid can be added to wine, it can also be removed. But the key here is balance; Okanagan rieslings have equilibrium because their fruit expressions soften sharp edges, as do the occasional, small amounts of sugar left in some wines. (Think about lemonade: The synergy of sugar and lemon juice is greater than the sum of its parts.)
While this isn’t exactly fresh news to the industry, the revelation lacked relevance to the average New York consumer because British Columbia’s wines weren’t available in our market. Until now.
Recently launched on the Wines of B.C. website, an e-commerce platform makes available select bottles from a small portfolio of boutique producers directly to New York consumers. The selection won’t overwhelm you into indecision, but there’s enough to whet your palate. Plus, shipping costs are relatively nominal (although the wines are rather expensive).
Located a four-hour drive east of Vancouver in south-central British Columbia, the Okanagan Valley has around 130 producers spread across sub-regions like Kelowna, Naramata, Oliver/Osoyoos, Summerland, and the neighboring Similkameen Valley.
The Okanagan is considered the northernmost fine-wine-producing region in the world (although climate change is pushing the latitudinal reach of Vitis vinifera farther into Northern Europe).
The lake- and wilderness-dense countryside encompasses a stunning 125-mile swath of patchwork vineyards running south to the border with Washington State. The semi-arid desert climate provides hot, dry summers and long sunlight hours for the ripening of grapes, with cool nights helping to retain fresh acidity.
Not sold on Wines of B.C., but available in the New York market, are the rieslings of Tantalus. Winemaker David Paterson and vineyard manager Warwick Shaw are experts at transforming the grape into a transparent, piercing expression of their vineyard sites. Tense, almost quivering lemon-lime notes snap like Pop Rocks above a chalky, mineral complexion.
Riesling isn’t the only grape to enjoy the favor of the climate and soils. Vivid pinot noir, chiseled syrah, savory cab franc, and attractive Bordeaux blends show promise in the red category. Available on the B.C. site, Meyer Family specializes in pinot, and Black Hills Estate and Painted Rock produce some of the region’s most serious red blends. Until more producers penetrate the competitive NYC market, however, my best advice for exploring Okanagan Valley wines: Go there, and bring along a big suitcase.