Rockpile Ridge Zinfandel 2018

Producer: Mauritson Wines
Region: Sonoma
Appellation: Sonoma County
Country: USA
Classification: AVA
Wine Type: Red
Variety: 95% Zinfandel, 5% Petite Sirah
Bottle Size: 750 ml
Alcohol: 14.6%
Soil: Loam, clay loam, gravel
Farming Practices: Sustainable
Awards: 93-Wine Enthusiast; 92-Robert Parker; 90-Jeb Dunnuck
info@buyersandcellars.ca www.buyersandcellars.ca

Cellar Profile

7th generation farmers, the Mauritson family have been working these vineyards since 1868, finally releasing their own wines in 1998. The winery is now under the stewardship of former University of Oregon football player, Clay Mauritson, who grew up working the vineyards with his father before cutting his teeth at Kenwood Vineyards. Zinfandel and Cabernet Sauvignon specialists, Mauritson Wines is located at the corner of Dry Creek Valley and Lytton Springs Road, hallowed ground for Zinfandel, in particular. The vast majority of the Mauritson grapes are sold to premium producers throughout Sonoma County.


Rockpile Ridge is one of California’s newest AVAs, sitting at the northwestern edge of Dry Creek Valley, in Sonoma County. It covers a high ridge (800-2000 feet in elevation) that sits above Lake Sonoma, just 13 miles from the Pacific Ocean. The presence of Lake Sonoma, which was created as a water reservoir in the early 1980s, helps to limit the Pacific Ocean fog here by creating an inversion layer that draws the cooler air toward the lake’s surface, allowing warmer air to rise. The sunny, mountainous Rockpile vineyards experience hot days and very cool evenings, allowing extremely long hang times for the area’s grapes. Like its closest neighbor, Dry Creek Valley, Rockpile is best known for its Zinfandel, making intensely-coloured, concentrated red wines.


Sourced exclusively from the Rockpile Ridge Vineyard that is located at nearly 360 metres in elevation in the Rockpile AVA. This vineyard has sweeping sun exposures from southeast to northwest and consists of nine distinctly different blocks of Zinfandel.


Zinfandel is a dark-skinned red wine grape variety widely cultivated in California. It arrived in the Americas from Europe in the early years of the 19th Century and was an immediate success in both Napa and Sonoma counties, which remain its strongholds today. After 30 years of discussion and disagreement (including legal intervention by the Bureau of Alcohol, Tobacco and Firearms), DNA research carried out by Carole Meredith of the University of California at Davis from the early 1990s to 2002 (known as the Zinquest) confirmed that Zinfandel is identical to Italy’s Primitivo.


Nine distinct blocks are harvested and fermented separately to insure the integrity and uniqueness of the individual blocks. Aged 15 months in 100% French oak barrels, a combination of new and second fill. The 2018 vintage adds a dash (5%) of Petite Sirah.

Tasting Notes 

Deep, dark ruby colour with expressive aromatics of ripe, brambly fruit, mocha and toasty oak. The palate is full, heady and loaded with rich fruit—black plum and blueberry–alongside Mauritson’s trademark minerality. It Is all framed beautifully by firm, ripe tannins and a core of acidity often lacking in Zinfandels.