Why are Rhone white grapes like Picpoul and Grenache Blanc so different in California?
October 04, 2024
Most grapes have a pretty well defined character. If you read the literature about Cabernet Sauvignon, it will give you a good sense of what it's going to taste like whether the bottle you're tasting is from Bordeaux, or Chile, or Sonoma. Same with Pinot Noir, whether you're tasting from Santa Rita Hills, the Willamette Valley, or Volnay. This isn't to say there aren't regional signatures or a stylistic range depending on the region's specific soils and climate, or the producer's preference for ripeness, oak, or winemaking techniques, but there's still a pretty recognizable through-line irrespective of region.
So what the heck is going on with a grape like Grenache Blanc? If you read the older literature of what it tastes like from France or Spain, it sounds like an entirely different grape than we know. Take the description of Grenache Blanc in Jancis Robinson's "Guide to Wine Grapes" from 1996:
"...the variety is much planted in Roussillon, where it produces fat, soft white table wines. It need not necessarily be consigned to the blending vat, however, and since the early 1990s, flattering, soft, supple, almost blowsy varietal versions have been marketed."
Is this the same Grenache Blanc that we've found to achieve ripeness at high acids and produce wines with exceptional tension, minerality, and high-toned fruit? It sure doesn't seem like it. How about Picpoul? Here's what Jancis has to say in the same reference:
"It can produce usefully crisp blending material in the Languedoc"
Talk about damning with faint praise. Here at Tablas Creek, and more generally in California's Central Coast, both grapes come with a remarkable balance of medium-to-full body, bright acids, and crystalline fruit. They have different flavors, with Grenache Blanc leaning more toward petrichor minerality and green apple/white grapefruit fruit, while Picpoul Blanc is more tropical, with a saline sea spray mineral character that reinforces its reputation as the Rhone's preeminent oyster wine, but in both cases what we're seeing here is nearly unrecognizable from these European descriptions. Now I will admit that I am stacking the deck a little by looking at older references. In more recent editions, writers like Jancis have started to paint more nuanced portraits, often with a caveat explaining that the grapes show differently in California. So, what do I think is going on? I'd attribute what we're seeing to some combination of four factors:
The specifics of the California climate
When we purchased our property in Paso Robles back in 1989 we thought we'd found a perfect match for the climate of Chateauneuf du Pape. It turned out we had chosen a place that was a bit cooler overall. The mid-summer days are hotter here, yes, but the nights are colder, and in fact more colder than the days are hotter. For example, Monday of this week was the beginning of the little heat wave that we've had. The day topped out at 98.0°F. But the coolest point of the morning was a chilly 48.2°F. That's a swing of 50°F! And it's not just about the low during the night. Those chilly nights mean that the mornings are cool quite late. At 11am it was just 72.8°F, and it only hit 90°F at 3pm. Four hours later, it was back down in the 80s. It's important to remember that it's not just the high temperatures but the duration of the heat (and cool) that matters to grapevines as they ripen their fruit.
The net result of these cooler average temperatures mean that we pick the same grapes on average about 10 days later than they do at Beaucastel, with slightly lower sugars and somewhat higher acids. If you ask the grapevines whether it's cooler or warmer, they will tell you unequivocally that it's cooler, most years, in Paso Robles than it is in Chateauneuf du Pape. What's more, the differences in soils further differentiate the two terroirs. In Chateauneuf, the rounded river stones known as galets serve to absorb the daytime sun and warmth and radiate it back to the vines in the nights. That was critical in earlier eras because it allowed the region's vineyards to ripen late-ripening grapes like Mourvedre and Roussanne before the rainy season got going in earnest in late October. In Paso Robles we have no such stones at the surface, and our move toward regenerative farming has meant that we're doing everything we can to avoid bare ground and instead focusing on having the sun hit plant material that can absorb it for photosynthesis while guarding moisture and keeping the soils below cooler.
Finally, there is good evidence that calcareous soils preserve acidity in grapes because the omnipresence of calcium ions tends to displace potassium, which grapevines use to break down acids in the ripening process. I dove into that in detail in a blog from 2020. While both Chateauneuf-du-Pape and west Paso Robles have calcareous sub-soils (it's a main reason why we chose to found what would become Tablas Creek here) those soils are closer to the surface here, on average, than they are in the Rhone. I had the opportunity recently to dive into (almost literally) our soils in a recent explainer video posted to Instagram:
Taken together, all these climate and soil factors tend to preserve acidity in wines as they ripen. That allows us to give grapevines longer hang times, which tends to produce wines with more texture and more opportunity to develop well-delineated fruit, which is in turn highlighted by the acids.
An attention to yields
We're convinced that grapes like Picpoul and (to a lesser extent, Grenache Blanc) are victims of a vicious circle in France. Because they're not much respected and don't command a high price on the market, they tend to be only viable economically if they're cropped heavily. So, they're usually overcropped and then earmarked for quick fermentations and inexpensive bottles, which reinforces that they're of low value. Here in California, we crop them modestly and give them the attention in the cellar they deserve.
Take Picpoul de Pinet. A quick look on Wine Searcher produces 131 results. Of those, just 3 are listed for more than $20. Several are below $10. For that price, the wine needs to be grown and made, bottled, shipped to America, imported (and marked up), sold to a distributor (and marked up again), and finally sold to a retailer (and marked up a third time). The three markups typically double, at least, the price that the producer receives. Imagine how cheap the grapes have to be to sustain a wine at this price! One of the ways that you can keep grape cost low is to produce more tons per acre. To protect against overproduction, the laws that govern the Picpoul de Pinet AOC specify a maximum number of kilograms per hectare (10,000, or about 4.5 tons per acre) as well as a maximum yield of juice (66 hectoliters per hectare, which works out similarly). And side note: it's amazing to me that at those yields and those prices a grapegrower can earn a living.
Compare that, though, to the Picpoul yields here at Tablas Creek. Even if we wanted to increase our yields, the dry climate and often punishing summer heat mean that we've never averaged even 4 tons per acre. Over the last 20 years, our average has been 3.07. That inherently gives you more concentration, while the longer hang time from the cooler climate allows you greater intensity of fruit. Add while the AOC limits are just that -- limits -- the low prices that the wines from a grape like Picpoul have historically commanded has meant that the only way to make a living there is to get as close to those limits as you can.
More focus on whites and the modern fermentation techniques to match
While Picpoul has had the advantage of a regional AOC that mandates its use, Grenache Blanc has not. Instead, it's mostly planted in places where red wines are dominant. Take Cotes du Rhone. Despite significant increases since 2015, white wines only account for 11% of the production there. In Chateauneuf du Pape, as of 2009, the total was even lower: just 7% of acreage was dedicated to whites, and while the most-planted of these was Grenache Blanc, it only accounted for 2.5% of the appellation's total.
With whites making up such a small part of most wineries' production, it's probably not surprising that in many cases there was not the incentive to invest in the technology -- specifically stainless steel and temperature control -- that we take for granted when making white wines here in California. What's more, picking crews were typically hired to pick at the time the Grenache Noir (which makes up roughly 60% of Cotes du Rhone's acreage and 70% of that in Chateauneuf-du-Pape) was ripe. In our experience, Grenache Blanc is at its best picked about 2 weeks before Grenache Noir. If you're picking Grenache Blanc at the time you've hired your picking crew to pick Grenache, it likely started off a little overripe. If you ferment it in the same concrete tanks and age it in the same old neutral oak barrels that are traditional for the reds from the region, you're likely going to further squander whatever brightness you had when you picked.
It's important to note that these two things are changing fast in France now. Many more Rhone producers are focusing on whites, and the old-fashioned cellars without temperature control are much rarer than they were. We've know from our conversations with the Perrins and other Chateauneuf-du-Pape producers that there is a renewed surge of interest in particularly the higher-acid white grapes like Clairette Blanche and Bourboulenc. But the formative era when many of these mostly-British writers were cataloguing the white wines of the Rhone was one in which whites were more likely to be an afterthought.
The direct-to-consumer customer marketplace
Finally, what a luxury it is having direct contact with the customers who we hope to share our examples of these lesser-known grapes with. We can write stories about them on our blog (for example, see here, here, here, and here). We can share on-the-spot video of visits to the vineyard blocks, as we did in this YouTube short video series. We can announce their release to our mailing list and tell the story of how the wines are made and why people should care.
The direct contact with our customers means that we are not subject to the game of telephone that selling wine in wholesale inevitably becomes. For our wholesale sales, we tell our national marketing agent, who tells their distributor brand managers, who hopefully tell their sales team, who tell the buyers at the retailers and restaurants they call on. It's rare that the message stays consistent through all those links. The challenges involved are why there is typically so much less diversity on display on the shelves at grocery stores and at box retail than there is when you visit a winery. Most larger retailers don't have the time or the staff to talk customers through things they don't know, and so focus on large selections of the major categories.
Economies of scale come into play here too. If we make, say, 150 cases of an obscure white grape, how exactly is that supposed to be divided up among our 50 distributors. Should we give North Carolina, which represents 1.5% of our national sales this year, 2 cases? Or Connecticut, which represents 0.3%, 5 bottles? In either case, that wine will sit orphaned on a distributor's shelves with quantities so low that no sales rep will even pull a sample bottle. Multiply that out by a dozen different small-production wines each year, and thousands of wineries in the book of the average wholesaler, and you start to get a sense of the scope of the challenge.
Instead, we just sidestep the whole issue and reach out directly to the list of people who have over the years shared their contact information with us. We'll often sell out a small-production white in a few weeks after sending out an email. That allows us the confidence to plant it, and the better margins that we get from our direct sales allow us the resources to invest in its import, propagation, planting, and production.
Would we have trouble marketing a $40 bottle of Tablas Creek Picpoul in the national (or international) marketplace? Maybe. It's hard -- though not impossible, if you look at our box wine program -- swimming upstream against the current of what the marketplace thinks a particular grape "should" sell for. But does that mean that a bottle of Regenerative Organic Certified Picpoul Blanc or Grenache Blanc, made with love by the Tablas Creek team from grapevines imported from France, electric with acid and yet with plenty of fruit, shouldn't cost $40? I would argue that they should, and invite you to put one up against a similarly priced example of a more exalted white grape (say a Premier Cru Chablis, or a dry Alsacian Riesling). I think you'll find it will shine.
And maybe it will put the idea to bed that these grapes are fat, soft, and should be consigned to the blending vat.