Steve Kistler and Mark Bixler believed that remarkable and charactered Chardonnays of site could in fact be grown and produced in California. It was a notion ahead of its time. For the last forty years we’ve been pursuing that notion without compromise. Bill Price, longtime owner of Durell Vineyards purchased an interest in Kistler Vineyards from Steve in 2008. Jason Kesner joined Steve in the cellar in 2008 in order to begin to lay the groundwork for the next forty years. Steve retired from Kistler Vineyards at the end of 2017.
One heritage Californian selection of Chardonnay planted across fifteen vineyards, from Carneros to Sonoma Valley, to the Russian River Valley and Sonoma Coast. From those sites we produce eleven vineyard designate Chardonnays. We are wholly dedicated to the ideal of wines of site. It’s an unparalleled approach in the new world.
Two heritage selections of Pinot Noir inform all of our Pinot Noirs. Originally hailing from a Grand Cru vineyard in Burgundy, we’ve been propagating these two selections for the last twenty-five years. They, like our Chardonnay clone are very low yielding, resulting in wines with a natural density and concentration of flavor, balanced by elegant natural acids and elevated aromatics.
All of our Chardonnays are fermented in our subterranean barrel chais, where the native yeast and various biological patinas rule the ecology. Hand stacked french cooperage that we purchase as wood and have air dry aged in St. Romain where it is crafted into barrels three years later, houses all of the wines.
There’s no leeway for even a single barrel being a quarter inch out of line in our fermentation rooms. They have to be perfectly in line, every one, to set the tone and expectation for every move we make in the cellar.
We guide our fermentations with as little intervention as possible. Our entire process is designed to enhance the characters of the individual sites, relative to one another, to peel back further layers as opposed to leaving our mark on the wine. Our fermentations are conducted solely with native yeasts, at moderately cool temperatures and with little to no machination of the fruit.
A gentle touch defines our approach to Pinot Noir. We watch, and take notes, and guide more than we overtly act, or intervene. We've worked all year in the vineyard for this fruit. At the winery we simply usher it through its fermentations and into barrel as delicately as we can.
We farm the majority of our acreage ourselves. But we wouldn’t be where we are without our growers and the nature of our relationships with them goes back to our beginnings in the late 70’s.
We don’t buy fruit in the traditional sense, instead we plant in partnership with our growers, selecting the best soils, and working very closely together on the establishment and raising of those vines with our heritage clones. The youngest relationship amongst our growers dates to 1994 when we began bottling both our Hudson and Hyde bottlings from the Carneros region.
They may have vines already in the ground, but it takes generations of working with a site to truly understand its best and highest potential. If there is one thing you have to take from the old world it’s most certainly that. In our winemaker Jason’s words: “We’ll be tasting at the winery and I’ll ponder aloud how great some of these sites will be in a hundred years. Some of our people will look at me like I’m crazy but isn’t that what we’re doing now, learning things that will be built upon for the making of the wines then?”.
Les Noisetiers is a combination of specific lots from within Kistler’s vineyards of designated quality that are situated in far western Sonoma County, near the coast. They began creating Les Noisetiers upon noting that there was an inherent mineral tone which they loved in the lots from their vineyards planted in these coastal sandy Gold Ridge soils.
A classic balance of layered, juicy fruit and mineral backbone. It is delicious wine, with white flowers and stone fruit aromatics leading to a full bodied, juicy core, loaded with flavors of peach, apricots, pineapple and pear.
Walt Bob's Ranch Pinot Noir is made from 100 percent Pinot Noir.
Bob’s Ranch Estate Vineyard
Characterized by its proximity to the Pacific Ocean; Coastal breezes along with low rolling hills and morning fog define this cool climate site
Sonoma Coast Appellation
Heavy fog and strong winds tempered by bright afternoon sunshine
Petaluma Wind Gap
Creates a unique micro-climate within the appellation, producing distinctive Pinot Noir
Sandy, Well-draining Soils
Stresses vines into producing grapes of full varietal intensity
43 Vineyard Blocks on 72 Acres
With an array of clones and field selections, this ranch produces complex and delicious wines
Review:
"The stunning 2021 WALT ‘Bob’s Ranch’ Pinot Noir is a masterclass by this winemaking team. This Sonoma Coast AVA property has a wide range of Pinot Noir selections and is in close proximity to the Pacific Ocean. Stored in roughly 30% new French oak, this shows off dense blackberry and black cherry notes on the nose with shades of cola. Very seamless on the mouth, this effortlessly glides throughout the drinking experience. The salty and savory aspects, as well as the length, all add to the enjoyment."
Owen Bargreen 95 Points
Obsidian Vineyard Syrah is bathed in terroir. The vines experience severe stress, pushing the roots ever deeper through rock in search of water, producing miniature clusters of intense power. Given the wine’s natural propensity for tannin, we take extreme care in the cellar to chisel/whittle its rough edges and leave room for richness to flatter its distinctive scaffold. The mid-palate supports flavors of roasted coffee beans, sarsaparilla, and dark chocolate. The finish marches on long after most wines have tired.
Our estate vineyard — the six-acre Obsidian Vineyard in the Knights Valley AVA — has an incredibly complex soil structure. It takes its name from a layer of volcanic obsidian rock that was discovered when we drilled for water.
Chocolate ganache, black currants, fig, graphite, and an expansive mouthfeel.
Review:
"Joe Donelan believes his Obsidian Vineyard is one of the world’s greatest sites for Syrah. I’ve visited the site twice, and can say candidly it certainly sits among the most striking vineyards I've ever laid eyes on within the U.S. It sits like a rock on a promontory—two switchbacks to reach the top—and the stones under the top soil, quite literally, never stop emerging from the ground. The place has an ancient, almost sacred, temple-like feel. It is consistently swept by afternoon breezes. The vineyard was replanted in 2017 after fires ravaged it. Winemaker David Milner laid out the site at denser spacing than before, at 2,000 vines per acre to keep yields per vine low while still achieving sensible tonnage, averaging around three tonnes per acre. Viognier was planted for co-fermentations, alongside some Cabernet Sauvignon, for a single vineyard bottling of that grape. ‘God put on his viticultural hat when he designed this site,’ says Milner. The vineyard is planted with ENTA 174, 877, and Alban 1 clones, along with Donelan Heritage selections certified virus-free. The wine, the 2023 vintage release (the first from the new vines), was aged for 21 months in 36% new oak and co-fermented with 1.8% Viognier, using 32% whole clusters. And it is positively gorgeous: composed of nine different blocks, each fermented separately, then assembled through sequential blending, with no racking until bottling. From just five-year-old vines, this wine is utterly extraordinary—something oddly achievable from young vines on rare occasion. I tasted this wine from the same bottle over three days. While the high-toned espresso-bean and cedar accents are present at first pull of the cork, they mellow out a day later, and the fruit profile is so vibrant. This is the sign of an excellent wine. I first tasted wines from the Donelan’s Obsidian Vineyard years ago at Tasting Panel Magazine in the late, great Anthony Dias Blue’s office. Cushing Donelan showed the wines, and to this day, I recall the first moment I put my nose into a glass of Obsidian Syrah. In early January of 2026, as I nosed this brand new release of Obsidian Syrah, I was transported straight back to that tasting twelve years ago. What’s remarkable is that the aromatics are unmistakably the same, yet from these new, more densely planted vines, the aromas are more refined—precision-farmed wines from young vines delivering a level of detail and poise that feels beyond their years. So what’s in the glass? Pure red, black, and blue fruit nuances layered with tobacco, white truffle character, violet pastille, and an intoxicating perfume. White pepper notes emerge on the medium- to full-bodied palate, framed by velvety tannins. Iron-like and crushed slate minerality underpins dazzling black cherry and blackberry fruit, brown spices, and blood orange richness. There’s a velvety, iron-fist quality here that exudes polish, complexity, and undeniable quality. You want to drink it now—and you absolutely can—but it will also reward time in the cellar. Either way, you’ll be utterly wowed. And when you realise the price is under £100, the achievement becomes even more staggering. As these vines mature, what will become of them in subsequent vintages? I suspect that as the vines mature, they'll go in and out of phases, but so long as Mother Nature cooperates, I expect this wine to continue to dazzle each vintage. - Jonathan CRISTALDI"
Decanter (January 5th 2026), 100 points
This is the first vintage of the Obsidian Syrah after wildfires torched the vineyard in 2017, leading to significant redevelopment. Throughout all those years, the Donelans have exhibited remarkable patience and a clear sense of purpose. This is their reward: a truly magnificent, towering wine of the highest level.
Knights Valley is one of the most magical grape-growing districts in the United States, but it is not very well known because only a few estate wineries are located there.
The 2023 Syria Obsidian Estate is one of the most profound, moving wines I have tasted in Sonoma County. Blackberry, gravel, incense, chocolate, lavender, and dried herbs race out of the glass. Delicate yet powerful, the 2023 is spectacular. It is also very fairly priced in today’s market.
Vinous 100 Points