A Revolution In Winemaking

The GOfermentor brings 21st century technology to winemaking. This technology dramatically reduces the water usage. The GOfermentor provides better control of fermentation parameters, minimal exposure to air, and automated cap management, producing better extraction and color and ultimately better quality wine.

Free GOfermentors® for wildfire affected wineries in CA

GOfermentor, a closed system allowing no air during fermentation, could prevent smoke taint

Wine Business Monthly, Nov 2019, Winemaker Trial, Comparison of Phenolic Extraction in a GOfermentor Versus a Tank

After five years developing the GOfermentor, Dr. Vijay Singh sent the new machine to Enzo Cagnasso of the University of Torino, Italy to compare the high-tech fermentation technique to the more traditional pump-over method. Read more.

Research Literature        Events Calendar

GOfermentor makes award winning wines



Sky Acres’ GOFermentor System of the Future

WineEnthusiast, April 3, 2019

At Sky Acres Winery in Far Hills, New Jersey, fermentation engineer Vijay Singh and his wife, winemaker Meera Singh, craft wine in an unconventional way. The semi-retired couple has patented the GOfermentor, a winemaking system that occupies a small footprint, but has delivered outsized results.

GOfermentor JR featured in The Wall Street Journal


The Winery That Fits in a Closet

Read more The Winery that fits in a closet 

Fermenting Wine Grapes in a Bag

The GOfermentor enables quality improvement in small wineries, By Richard Carey


GOfermentor is a new method of managing fermentations of 1-ton lots of grapes. A large plastic bag with two compartments is placed in a specially designed bin. After crushing, the grapes are put in one compartment and sealed. As the second compartment is filled with air, it pushes against the grape bag, which forces juice through the cap.

A major advantage of the GOfermentor is the reduction of water use in the winery. The cellar stays clean during fermentation, and cleanup after fermentation is easy because pomace stays in the bag, which is recyclable.

The GOfermentor system gives a winemaker flexibility in managing small or odd-size lots of grapes.

The GOfermentor Improves Quality

The single-use fermentation liner is delivered clean and the fermentation is performed entirely inside this sealed environment with no exposure to air. The automated cap management punch technology gently extracts more color and flavor than any conventional system. This results in increased freshness, reduced oxidation and better quality wine.

Stops Water Wastage

90% of water usage in a winery is water wasted in washing operations. The GOfermentor uses FDA approved food-grade, biodegradable, single-use liners that eliminate most of the washing operations. No need for washing before or after use.

Saves Time and Capital

Just move the palleted container into the fermentation area, connect it to a household electric plug and put in a new liner. GOfermentor bis ready to fill in less than 20 minutes of set up. No press to clean and maintain. No installation cost. Complete systems start as low as $1500. Total hours per batch as low as 2 hours.

Reduces Labor

Washing operations are totally eliminated. At the end of fermentation, press out the wine using the integral press. Use a pump-over sump strainer to remove any entrained seeds, skins, and stems, and collect the clarified wine in another bag or other container. Then pull out the liner containing the residual pomace and disperse it as fertilizer in the vineyard. Discard the biodegradable liner. Done.


GOfermentor was created by Meera and Vijay Singh. We started winemaking for ourselves and found the existing technology too tedious and environmentally unsound. Traditional winemaking is more janitorial work than wine making! You have to wash all the tanks before you start, then you clean all the equipment, then you have to wash the whole mess again when you are done. Punchdown is another tedious and dangerous process. The overwhelming amount of work led us to rethink the whole winemaking process, to optimize it so that it could be run by just the two of us. To our surprise, the new automated punchdown technology helped us extract better color and flavor. Our wines won awards, and others wanted to use the technology. After a number of trials at various wineries in 2015 and 2016 the technology is now commercial. Buy the low-cost patented GOfermentor. Made in USA.


Dr Singh is a world-recognized biotech scientist, he developed the highly acclaimed Wave Bioreactor which revolutionized the production of biopharmaceuticals by using a disposable cultivation bag. He decided to apply his expertise in disposable processing to the key issues of winemaking. The patented GOfermentor and SmartBarrel wine aging/storage system was born out of this work.

Responsible Plastics

GOliner bags are as environmentally responsible as we know how to make them. GOfermentors eliminate nearly all wash water and associated labor.  A ton of grapes uses one GOliner 10-lb. fermentation bag.  Pomace is readily transported for use as compost or animal feed.

All plastics are not alike. The leftover GOliner bag has no plasticizers or UV blockers and rapidly disintegrates in a solid waste landfill. You may find a used syringe, plastic water bottle or Styrofoam cup floating up on the beach, but you will never see an intact GOliner bag.

General concern about plastics includes considerations of biodegradability, petrochemical origins, massive accumulations in oceans and hazards to animals on land and sea.  Without question, our lives abound with inappropriate use of plastics in clamshell packaging, Styrofoam cups and packing materials, throwaway water bottles and many other needless excesses.  A tiny package of black pepper from Amazon is surrounded by huge volumes of Styrofoam peanuts. Why? The pepper will be gone in a month, but the peanuts last millennia.

Without question, abuses in plastics have gone from bad to worse. Twenty years ago, water came from a faucet and you used a glass.  Purchases were made in stores rather than home delivery, with far less packaging and packing.

Nevertheless, it’s important to understand that plastics are necessary in many applications – among them medical, sanitary, food preservation, and waste disposal. We all consume and generate waste. We cannot have a zero footprint. All we can do is minimize our overall impact.

Without plastics, modern life would not be possible.  Single-use disposable plastics have become the preferred environmental alternative in many applications. The whole purpose of the garbage bag is to contain waste so that it does not contaminate the kitchen or make foul odors. It makes it easy to transport waste so that it can be collected and disposed of safely. Of course, the greenest solution would be to collect the garbage in pails and take it to your compost heap every day. This was the norm in the 19th Century but today is no longer practical in our increasingly urban society. Imagine NYC without garbage bags!

Single-use plastics have revolutionized medical and pharmaceutical applications. Twenty years ago, syringes were made of glass and were washed, boiled and reused. Risk of contamination due to equipment failure or human error make this unthinkable today. Tracking of re-used medical supplies coming into contact with infectious agents is cost-prohibitive and unreliable. So severe are the consequences of poorly sanitized medical supplies are that today nearly everything that touches the patient is single-use.

Diapers used to be washed and reused, a practice that involved collection difficulties, health risk and great expense.  Today, almost everyone uses disposable diapers.

Washing and water

Another misconception is that recycling and reuse are free.  Failure to correctly wash contaminated equipment has consequences – people get sick, wine is ruined, and so on. Millions of tons of detergents and other chemicals used for washing pollute billions of gallons of drinking water.

Municipalities are beginning to understand these consequences. When I applied for a winery license in Bedminster, NJ in 2014, I was told that that this would not be possible since waste water discharge to surface waters is forbidden. I nonetheless obtained a license once I demonstrated that the GOfermentor process with single-use plastics does not generate significant waste water.

We can make plastics from corn, but water is our true irreplaceable resource.  Counties in California are demanding that wineries control their waste water discharges. All the water on this planet has been here since the planet was created. Water never made nor destroyed – just polluted.

GOliner customers are welcome to ship their used GOliner (washed and clean of course) to us UPS ground. We will happily credit them the shipment cost on their next GOliner order, re-use any recyclable components, and dispose of the rest in an environmentally responsible manner.