The variety & quality of the wines were great. The owners were also very friendly & accomodating to our dogs, allowed them in the tasting room and even shut the door so they could run free. It was a gorgeous day and when another group decided to taste outside on the deck, we decided to finish ours there as well, a really nice outdoor space with great views.
Ray Schnorr and Jeannine O'Brien, owners, farmers, and winemakers, began their journey with a simple landscaping idea—planting 10 Zinfandel vines alongside their home in Rancho Bernardo. They sourced the plants from Sonoma County, stored them in a hotel during a trade show in San Francisco, and planted them in the spring of 2004. A year later, as the vines thrived, the question arose: “What are you going to do with those grapes?” What started as a casual interest in wine evolved into a full-blown passion for winemaking. After acquiring the necessary equipment, building refrigerated storage, and eventually purchasing land for a vineyard, their amateur label, "Slippery Slope," was born.
During this time, Ray immersed himself in winemaking, taking classes at a local community college and online courses from UC Davis. He became active in the local home winemaking community, earning recognition and accolades in county and state winemaking competitions. Jeannine, too, became a winemaker, producing a gold medal-winning vintage. More recently, she passed the rigorous exam to become a Level 1 Sommelier in the Court of Masters.
In 2007, they acquired their property in Highland Valley and began construction on their winery and vineyard in 2009. Acknowledging the region’s rich history of grape growing, which spans over a century, they named their estate Highland Valley Vineyards and designed the winery in a 1920s craftsman style.
Their approach blends traditional winemaking techniques with modern technologies to craft wines of distinction and character. They specialize in producing bold red wines with full body, balanced fruit, and a rich finish. To complement their estate-grown grapes, they source fruit from San Diego (South Coast), Mexico, Paso Robles (Central Coast), Amador County (Sierra Foothills), Lodi, and Dry Creek Valley (Sonoma County).
As winemakers and farmers, Ray and Jeannine now oversee the full journey from earth to bottle, practicing sustainable farming to enhance fruit quality while minimizing environmental impact.
The cave's ambiance is really neat... it's fun to explore the vineyard above the cave before or after your tasting and see where some of the grapes are grown and if you're an adventurous type, it's fun to take pictures by the giant Grape crusher statue on top of the vineyard. This is truly Napa's hidden gem! It's located at the Meritage Resort at the south end of Napa, and the tasting room is in a cave UNDER THE GRAPES. It's such a unique place to visit in Napa. The wines are excellent. The Mysterium is one of my favorite reds, and I love the Sauvingnon Blanc. The chardonnay is also very nice. The service in the wine cave is impeccable, and the employees are really knowledgable about the wine. They will also stay and have a friendly conversation with you if it's not too busy.
Midnight Cellars, home to the Hartenberger family and their small production of award-winning Paso Robles wines. Twenty eight acres of hilly, rocky, limestone-rich and south facing slopes are dedicated to growing quality, low-yield, sustainably farmed Bordeaux grapes. In addition to the Cabernet Sauvignon, Merlot, and Petit Verdot varietals, are Zinfandel and Chardonnay. Known for their gigantic Merlot, Midnight Cellars also makes some of the best “Paso Roblan blends.”
A life-long interest in fine food and artisan craft led, Proprietor and Winemaker, Rick Davis to the wine industry. With graduate work in soil sciences and his first experience as a cellar-hand for Rivendell Winery, a small winery in New Paltz, NY, he quickly learned the trade and excelled to Winemaker. In order to pursue this newfound passion, his move to Sonoma County, CA left him in the perfect place to master winemaking and focus on Pinot Noir.
Hecker Pass Winery, established in 1972 by a third-generation vintner from Italy, produces wines in a classic European style. The winery embraces traditional methods, including dry farming, head pruning, hand picking, and wild yeast fermentation, ensuring each wine reflects a natural, Italian character. Committed to sustainability, they avoid herbicides, pesticides, and cultured yeast, focusing on crafting authentic wines. Today, the fourth and fifth generations of the family proudly continue this legacy, producing old-world wines in a sustainable way for future generations.
Milliaire Winery, a small family-owned establishment, was founded by Liz and Steve Millier in 1983 in the cellar of their former home in Murphys, CA. By 1990, the winery had relocated to an old Flying A gas station on Main Street in Murphys. Every part of the building was put to use for daily operations: barrels stacked in the repair bays, wine tanks in the backyard, bottling done in the front yard, and a tasting room set up in the office. Locals joked about the contents of "those tanks," and a friend humorously named it the "Roadside Chateau." Driven by their passion for crafting premium wines from the Sierra Foothills, Milliaire Winery has since expanded to occupy an over 8,000-square-foot facility with a dedicated barrel room and modern crush pad. Despite this growth, the Milliaire tasting room remains in the beloved "Roadside Chateau" at 276 Main Street.
The Winemaker
Winemaker Steve Millier began his winemaking journey in 1975 at David Bruce Winery in Santa Cruz after earning his enology degree with an emphasis in viticulture from Fresno State. With over 40 harvests under his belt, Steve possesses a deep understanding of both the science and art of winemaking and grape growing. Part alchemist, part artist, and part farmer, Steve continues to explore, learn, and most importantly, have fun in the winery. His life's work results in great bottles of wine that everyone is fortunate enough to enjoy.
Milliaire Winery, a small family-owned establishment, was founded by Liz and Steve Millier in 1983 in the cellar of their former home in Murphys, CA. By 1990, the winery had relocated to an old Flying A gas station on Main Street in Murphys. Every part of the building was put to use for daily operations: barrels stacked in the repair bays, wine tanks in the backyard, bottling done in the front yard, and a tasting room set up in the office. Locals joked about the contents of "those tanks," and a friend humorously named it the "Roadside Chateau." Driven by their passion for crafting premium wines from the Sierra Foothills, Milliaire Winery has since expanded to occupy an over 8,000-square-foot facility with a dedicated barrel room and modern crush pad. Despite this growth, the Milliaire tasting room remains in the beloved "Roadside Chateau" at 276 Main Street.
The Winemaker
Steve Millier began his winemaking journey in 1975 at David Bruce Winery in Santa Cruz after earning his enology degree with an emphasis in viticulture from Fresno State. With over 40 harvests under his belt, Steve possesses a deep understanding of both the science and art of winemaking and grape growing. Part alchemist, part artist, and part farmer, Steve continues to explore, learn, and most importantly, have fun in the winery. His life's work results in great bottles of wine that everyone is fortunate enough to enjoy.
In 1945 retired Sheriff Deputy Amos Beauregard purchased 157 acres of which 13 acres have been planted with winegrapes. Cabernet Saugivgon, Chardonnay, Zinfandel and an old grape know as Charabono were originally planted in 1880. Over the years Jim Beuregard has planted hundreds of acres of vines throughout the Santa Cruz Mountains and still maintains his 68 acres of Pinot Noir, Chardonnay, Zinfandel and Cabernet Sauvignon. Jim and his family live on the estate and Ryan Beauregard is the Winemaker.
Meet Niels and Bimmer Udsen, the dynamic husband-and-wife duo behind Castoro Cellars, a fun and inviting winery that has been making waves in Paso Robles since 1983. Their journey began with a simple dream: to create world-class wines from the beautiful grapes of the Paso Robles appellation.
Niels, a Ventura native, first dipped his toes into the wine business while studying Agribusiness at California Polytechnic University in San Luis Obispo. His passion for winemaking, combined with Bimmer’s unwavering support, led them to establish their very own winery in the heart of this thriving wine region.
But the path to success wasn’t conventional. The Udsens embraced what they fondly call the “backwards approach”: they started by making and selling wine, then acquired their own equipment, and finally built their winery and tasting room. Talk about an adventure!
You can visit Castoro’s charming tasting room in Templeton, right off scenic Highway 46 West, while their winemaking facility is located in San Miguel on the East Side of Paso Robles—both opened their doors in 1990. With the mentorship of Tom Myers, Castoro Cellars’ talented winemaker, the Udsen family has transformed from crafting a few barrels for friends and family into a thriving business.
Today, Castoro boasts over 1,400 acres of estate vineyards, all certified organic and SIP certified. Niels and Bimmer have built a brand that reflects their values, focusing on approachability and environmental consciousness. Niels' father, a Danish immigrant and successful businessman, instilled in him a deep appreciation for agriculture and entrepreneurship, which shaped their winery’s foundation.
Niels discovered his love for the wine industry during a senior marketing project for a local winery at Cal Poly. After marrying Bimmer in 1981, he honed his winemaking skills in the cellar of Estrella River Winery, learning every aspect of the craft for five years under the guidance of Tom Myers.
In 1983, armed with experience and a sense of humor, Niels and Bimmer launched Castoro Cellars, named after the Italian word for “beaver” (Niels’ long-time nickname). Their motto, “Dam Fine Wine,” perfectly captures their playful spirit!
Castoro Cellars isn’t just about great wine; it’s about family values, too. Their welcoming tasting room is family-friendly, even offering alcohol-free Zinfandel grape juice for the little ones. Plus, the Udsens prioritize a work environment that understands the importance of family flexibility for their employees. So, whether you’re a seasoned wine lover or just starting your journey, Castoro Cellars promises a delightful experience filled with laughter, warmth, and, of course, exceptional wine!
Out back winery in the Apple Hill Area has a large following. The wines are unpretentious and you will likely enjoy their Zinfandels and Syrahs.You will find that the taste of the wine does very considerably year to year, however, they have all been good and at the price point.
