Theorem Vineyards

Theorem Vineyards Where Diamond Mountain meets Moon Mountain, the truth of the land lives in every bottle. Experience our historic homestead in Napa Valley.

Theorem Vineyards crafts single-vineyard, single-varietal estate wines from two of the best high-elevation regions.

08/29/2026

Moon Mountain, brought in by hand. Volcanic soil, elevation above the fog line, coastal wind off the Pacific that never quite stops moving. It shapes everything we grow here. The press does the rest. What the land offers, we simply receive. Greatness cannot be rushed. 

📍 in Visit Calistoga in California's Napa Valley
🎥  Wade Estes  
 


The people of Theorem Vineyards are at the heart of everything we do, and we are proud to introduce Joey Brink, our Assi...
07/30/2026

The people of Theorem Vineyards are at the heart of everything we do, and we are proud to introduce Joey Brink, our Assistant Winemaker.

At this time of year, you will find Joey doing a little bit of everything, from sampling grapes in the vineyards, receiving fruit, monitoring fermentations, topping barrels, and making sure every inch of the winery is spotless. His positive attitude, incredible work ethic, and willingness to tackle any task make him an invaluable part of our team.

Born and raised in Saint Helena, and part of Napa Valley's historic Nichelini wine family, Joey took an unconventional path into winemaking. After earning a degree in Kinesiology from California State University, Chico, he discovered his passion for the cellar at Mending Wall Winery. There he worked his way up to Cellar Master under renowned Winemaker Thomas Rivers Brown who also consults on every Theorem vintage.

He first met Theorem's Winemaker Andy Jones in 2019, while working at Mending Wall.

Joey officially joined Theorem in the Spring of 2025, and we couldn't be happier to have him as such an important part of our small, dedicated team. His experience, enthusiasm, and commitment to excellence help ensure every vintage reflects the care and craftsmanship that define Theorem. He’s truly one of the keys to our success.

Cabernet Sauvignon veraison is well underway on both mountains, and the photos tell the story. Fewer clusters this year ...
07/24/2026

Cabernet Sauvignon veraison is well underway on both mountains, and the photos tell the story.

Fewer clusters this year on both Moon Mountain and Diamond Mountain, especially in Voir Dire, our old-vine heritage clone block. Unseasonably hot weather in March enabled a very early bud break, followed by a cooler and wet spring (5+ inches of rain) in April and May. Those weather patterns during flowering meant fewer berries set on each vine — but smaller vintages often yield extraordinary wines. The vine's energy concentrates on less fruit, and our rigorous thinning and picking by row and by vine ensures only the best grapes earn their place in a bottle of Theorem: telling the truth of the vintage through the lens of quality and single-vineyard expression that our wines are known for.

Grenache, a newcomer at Theorem known for its girth, is moving through veraison fast at Moon Mountain. Planted in 2021 along with Mourvèdre — each roughly half-acre blocks flanking our Cabernet Sauvignon vines — Grenache, Syrah and Mourvèdre are part of a larger question we're asking on Moon Mountain: how far Rhône varietals can go here beyond our original block of old-vine Syrah. We're chasing our love of Châteauneuf-du-Pape in this corner of the planet, testing what the soils and the plants reveal in return.

Harvest began today.Winemaker Andy Jones and Assistant Winemaker Joey Brink sampled at Moon Mountain yesterday. The vint...
07/21/2026

Harvest began today.

Winemaker Andy Jones and Assistant Winemaker Joey Brink sampled at Moon Mountain yesterday. The vintage is moving quickly.

Old-vine Chardonnay came in at first light, hand-picked for our vintage Blanc de Blancs. We harvested only the morning sun side of two blocks — our earliest start in Theorem's history.

A warm March kickstarted growth. A cool, wet spring followed, with more than five inches of rain. The long bloom left ripeness uneven across the old vines, so this Chardonnay will take two or more hand-harvest passes — giving the rest extra hang time to reach flavor maturity.

We pick each block when it's ready. This vintage, that means multiple harvests within the same block.

Elders and young vines, same mountain, finding their footing together. The expansion of our Diamond Mountain estate vine...
07/18/2026

Elders and young vines, same mountain, finding their footing together.

The expansion of our Diamond Mountain estate vineyards started in 2014 — one acre of Merlot, two acres of Jenkins clone Cabernet, tucked between the forests where the redwoods and pines meet and the hawks perch above. Jenkins is a rare heritage cutting descended from Château Lafite Rothschild, and on this site it became the singular clone behind Hawk's Prey, our purest expression of what this secluded pocket of the mountain can do with one grape, one block, no blending.

2017 brought Clone 685, a certified French selection of Cabernet Sauvignon from near the Pyrenees. We wanted blueberry fruit, bright minerality, and vibrant acidity — the aromatic lift and finer tannin structure of Bordeaux and Southern France, not the dense, fruit-forward power Napa Cabernet is known for. Those blocks became the foundation of Theorem Decree, our most aromatic, silky, approachable Diamond Mountain Cabernet.

2019 asked a different question. On the slope beside our 1985 heritage Clone 8 — the single-vineyard source for our flagship Voir Dire — we planted two acres of Clone 30, a heritage selection traced back to Harry See and the earliest days of Stags Leap District. Elsewhere on the estate, Clone 7, the Concannon clone by way of Bordeaux cuttings, got two acres to prove itself as a workhorse on the mountain.

Then in 2020, we planted our first new Clone 8 vines — less than an acre, right alongside the 1985 vineyard block that started it all. Same clone, same hillside, different age. We wanted to see what the elders could teach the kids, and what the kids might show us that the elders can't anymore.

Six years. Twelve years. Forty-one years. Every block still finding its footing, still learning what this mountain desires from it. That's the truth about Diamond Mountain — it doesn't arrive quickly, and it doesn't arrive alone.

This isn’t the buttery-oak bomb Chardonnay you might expect.Grown on a windswept ridge above the fog line in Moon Mounta...
07/16/2026

This isn’t the buttery-oak bomb Chardonnay you might expect.

Grown on a windswept ridge above the fog line in Moon Mountain District on the Napa-Sonoma border, at 1,600 to 1,800 feet, this Chardonnay picks up cold air off the Pacific and San Pablo Bay. Sonoma cool, Napa address, world-class Chardonnay.

Four blocks of old-vine Wente clone, more than twenty years clinging to this slope. We night-harvest for freshness. Whole-cluster press. Block malolactic fermentation to keep the acid line singing. New French oak stays under 20 percent — lift over lumber.

The result: A wine built on tension, not butter. Crisp. White peach. Lemon zest. Crushed rock.

Even the Chardonnay skeptics fall in love.

Shop the 2024 Theorem Moon Mountain District Chardonnay — link in bio.

Before Theorem, there was La Perlita del Monte. This is the back story.The Cole House is named for Dr. Richard Beverly C...
07/11/2026

Before Theorem, there was La Perlita del Monte. This is the back story.

The Cole House is named for Dr. Richard Beverly Cole, who built the Victorian home in the late 1800s after purchasing the Calistoga ranch on which it stands. The property was a respite from city life for Dr. Cole, a prominent San Francisco surgeon and obstetrician who served as surgeon general of California and president of the American Medical Association, among other titles. His residence in Calistoga was considered a feather in Napa Valley’s cap due to his prominence as a well-respected physician. Though Dr. Cole’s career kept him in San Francisco much of the time, his wife, Eugenie, and two daughters reportedly lived full-time on the Calistoga property, which they named La Perlita del Monte (“little pearl on the mountain”). The family planted crops and orchards, erected barns and a large chicken coop, and even built a small schoolhouse—believed to be one of the first (and now one of the oldest still standing) in Napa Valley.

Although Dr. Cole died in 1901, his descendants continued to live on the property, eventually operating a poultry farm. In 1958, the land was sold to Dr. James Graeser and his wife. The Graeser family added a 10-acre vineyard in the 1980s and established a bonded winery, opening a new chapter in the estate’s history. That old heritage vineyard is now the singular source for Theorem’s flagship Voir Dire Diamond Mountain Cabernet Sauvignon.

La Perlita del Monte became Theorem, but the mountain kept its memory. That history is one of many layers in the glass. Come taste it for yourself.

Thank you to our friends at Napa Valley Historical Society for preserving the documents, photographs, and stories that keep Napa Valley's history from disappearing.

Did we go too far? Seventeen blocks. Fifteen acres. Six grape varieties. Ten clones.We could have planted Cabernet and c...
07/09/2026

Did we go too far? Seventeen blocks. Fifteen acres. Six grape varieties. Ten clones.

We could have planted Cabernet and called it a day. Where’s the fun in that? We wanted to produce the very best wines specific to this site. Every shift in elevation, every change in exposure — we kept the old vines, then planted new to the topography swings. Rhône varieties, which feed our desire to make a Châteauneuf-du-Pape style wine on this mountain, are just beginning to find their voice.

This is the quest for the truth in Moon Mountain wines.

Address

255 Petrified Forest Road
Calistoga, CA
94515

Opening Hours

Monday 10am - 4pm
Tuesday 10am - 4pm
Wednesday 10am - 4pm
Thursday 10am - 4pm
Friday 10am - 4pm
Saturday 10am - 4pm
Sunday 10am - 4pm

Telephone

+17079424254

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