Sugarloaf Crush

A State-of-the-Art Custom Winemaking Facility in Sonoma County

We Offer Custom Crush Services For Discerning Clients

Sugarloaf Crush has been designed from Day 1 with the premier, small-lot producer in mind. From the location in the beautiful Sonoma Valley to the state-of-the-art equipment and technological integration, Sugarloaf has set a new standard in custom crush winemaking.

One Central Locaton

Crush, storage and bottling all under one roof for maximum efficiency

Straightforward Pricing

We promise not to nickel-and-dime our clients for basic wine production

Hospitality Integration

Facility includes event permits for 200 guests and tasting room access

Our Services

The Sugarloaf Crush facility provides a true grape-to-glass pipeline for our clients. With multiple presses, a broad range of small-lot fermentation tanks, on-site barrel storage and bottling, and a tasting room with event permits, we want our clients to feel as though this is their winery, not someone else’s.


Sugarloaf has set the standard for technological integration in the custom crush space. Beginning with our optical sorter, the wines are then gently moved to one of our fully jacketed, TankNet controlled fermenters via peristaltic pump.

  • 20′ sorting table
  • 100 HL Vaslin-Bucher press
  • 50HL Vaslin-Bucher press
  • 30HL Vaslin-Bucher press (Fall 2018)
  • 10′ table for cluster sorting
  • Vaslin-Bucher Oscillys destemmer
  • WECO Optical Sorter
  • Peristaltic pumps for transferring
  • Air pumps
  • Waukesha pumps for pumpovers
  • Lenticular filters for small lots
  • Crossflow filtration (coming January 2017)
  • Lab with basic wine analysis capabilities


  • 3/4 Ton Macro Bins
  • 1-2 Ton Stainless Steel
  • 7-9 Ton “Open” Top Fermenters
  • 12 Ton Fermenters
  • 4 x 1 Ton Open Top Oak Tanks
  • 2 x 40HL Open Top Oak Tanks
  • Concrete Eggs
  • All 75 of our tanks are connected to hot and cold glycol
  • All tanks are TankNet temperature controlled
  • All tanks are connected to positive pressure nitrogen for headspace management

Barrel Storage

Clients benefit from three separate temperature controlled and humidified rooms.  During the aging process, our clients are able to log on to their InnoVintapp and track their lots in near real-time with the capability to input work orders remotely on-the-go.

300+ Barrel Capacity with heating and cooling

200+ Barrel Capacity with heating and cooling

4500+ barrel capacity with cooling

Who We Are

Ronald Du Preez
GM/Head Winemaker

Ronald Du Preez – our resident Springbok – has 15 Sonoma County vintages under his belt.

A graduate of Stellenbosch University with a dual degree in viticulture and enology, Ronald cut his teeth on both varietal diversity and oversight of many wines at once, all while managing clonal research at the school’s experimental farm, where he was responsible for crafting over 100 wines.

Ronald crossed the ocean to join Jordan Vineyards & Winery as a harvest intern in 2000. Over the next 12 years, Ronald held positions of increasing responsibility at Jordan, ultimately becoming Associate Winemaker under founding winemaker Rob Davis. Ronald traveled extensively as national spokesperson for the luxury brand while simultaneously managing the 1200-acre Jordan viticulture program.

In 2012, Ronald joined négociant-supplying outfit M. Draxton Inc. in Healdsburg, producing wines for 25 different custom crush clients across five different facilities in the North Coast. While managing production of over 250,000 cases each year across nine different varietals, Ronald achieved 90+ point scores in multiple vintages.

Today, he’s thrilled to be a part of the founding team at Sugarloaf Crush.

“I look forward to partnering with our clients to craft acclaimed wines from some of the North Coast’s finest fruit,” said Ronald. “Drawing on my specialized background focused on luxury winemaking and custom crush operations – along with my passion for making outstanding wines from the world-class vineyards in this area – I hope to be a true partner in our client’s success.”

Frances Spangler

Frances Spangler recently arrived in Sonoma County from New York City and will be focusing on all financial and compliance aspects for Sugarloaf and its clients.

She spent 13 years at Time Inc., in the magazine publishing industry, as VP of Finance.  Her focus there was the physical production of magazines, as well as its internationally-licensed editions. She is a CPA, having spent the first 10 years of her career with Arthur Andersen in Boston, New York, and Los Angeles.

“I am excited to be joining Sugarloaf, supporting our wine-making team and clients as they make the upcoming vintages.  I look forward to working in the wine industry in Sonoma County, an exciting shift from consuming wine in Brooklyn in my time after work.”

Get in touch

The unique Sugarloaf Crush facility offers additional Client Benefits, Tasting Room space leasing and Private Events. If you are interested in the Sugarloaf Crush Distinction, please fill out the form below to schedule an appointment with our Staff. We’d love for you to stop by.

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