Ocean-cooled, mountain-grown — tensile, aromatic, and beautifully poised.
Our Moon Mountain District Chardonnay rewrites the Napa script. The Wente family brought these Burgundian grapevine cuttings to the United States in 1912. On a mountain, at 1,800 feet, the heritage clone produces tiny clusters with intense concentration — high acid, mineral, and a purity that makes this one of California's most distinctive Chardonnays. Perched above the fog line with steady Pacific and San Pablo Bay breezes, the site delivers long hang time without weight. We night-harvest for freshness, press whole-cluster, and ferment in a mix of barrel and stainless steel. Malolactic fermentation is blocked to preserve snap; new French oak is kept modest (about 20%) for lift over lumber. We age the wine sur lie and bottle with patience, after multiple small picks across the north-facing hillside to balance phenolic depth with natural acidity.
The result: a Moon Mountain District Chardonnay that's vivid and textural — clean lines, definitely not a butter bomb.
White Peach. Lemon Zest. Crushed Rock.
In the glass: citrus oil, Bosc pear, jasmine, honeysuckle, and wet stone. A creamy mid-texture (think lemon meringue) meets a bright, driving acid line that carries through a long, saline finish. Delicious on release, it really sings over the next 3–6 years.
“We tasted the world's benchmark Chardonnays, set the target, then made the Moon Mountain expression—no butter, just tension and texture.” —Jason Itkin
“We always hated the big, buttery thing. This is crisp—almost like a round Sauvignon Blanc—and it has become the go-to wine of many Chardonnay skeptics.”
— Kisha Itkin, Founder & CEO
Tasting Notes
Theorem's Moon Mountain District Chardonnay is estate-grown in the Moon Mountain District AVA above Napa and Sonoma Valleys — a high-elevation mountain appellation where vineyards sit above the fog line, cooled by dual coastal winds from the Pacific and San Pablo Bay.
1,600–1,800 ft, above the fog, cooled by Pacific and bay breezes.
Night-Harvested, Whole-Cluster Pressed
Protected aromatics, pure fruit.
Picked in Passes
3–4 micro-harvests for balance and detail.
Ageability
Vibrant now; best over 3–6 years.
An aerial view of Theorem Vineyards' hillside estate, with intimate shots of a hummingbird among lavender, blooming flowers, and vines, followed by wine being poured and aging in oak barrels.
