Just because vegetables were fermented does not make them immune to harmful bacteria like E. coli. Though fermentation improves food safety, the quality of the raw vegetable before it’s fermented is extremely important.
“The issue of fermentation safety is one that comes up a lot. People are getting excited about the fermentation world these days, fermentation is increasing in popularity…(but) the wheels can fall off if you’re not careful,” says Fred Breidt, PhD, a USDA microbiologist. Breidt spoke during a recent webinar hosted by The Fermentation Association, “The Science Behind the Safety of Fermented Vegetables.” “The moral of the story: if the vegetables were safe to eat before you ferment them, they’re going to be safe to eat after you ferment them. If they’re not, you’ve got to ferment them for a long time to make sure they’re safe.”
An outbreak of dangerous bacteria in fermented vegetables, “it’s going to be pretty rare that that happens,” Breidt stresses. But, without proper sanitation protocol and vegetable quality control, pathogenic “bad guys” can flourish, like E. coli, salmonella and listeria. E. coli is more common in vegetables because it’s extremely acid resistant, and can survive for long periods of time at low pH levels and cold temperatures.
“Just washing the surface (of the vegetable) isn’t always going to do the trick,” Breidt says. “You don’t have to eat very much to get sick.”
An E. coli outbreak in kimchi made 230 Korean school children sick in 2013. The children, from seven different schools, all ate fermented kimchi made by the same manufacturer.
“If the folks had eaten the cabbage that this kimchi was made out of, they would have gotten sick as well,” Breidt says. “Was the cabbage improved in the sense of maybe it had fewer E. coli on it because of fermentation? Yes. But there was still enough when this was eaten to make a lot of people sick.”
“You can’t rely on salt for safety is the point,” he adds. “It does encourage the lactic acid bacteria and it helps them grow and it will increase overall the safety of your fermentation.”
David Ehreth, president and founder of Alexander Valley Gourmet, parent company of Sonoma Brinery, moderated the webinar. Ehreth first met Breidt when Sonoma Brinery made a few tons of sauerkraut that became infected with yeast. Ehreth says “I called Ghostbusters, and that’s Fred Breidt.” Though yeast is different from a pathogen like E. coli, Ehreth said Sonoma Brinery has managed to control yeast over the years by careful management of production techniques and improved sanitation methods.
California wildfires are destroying an already tough harvest season for wineries in Sonoma County, Napa Valley and the Santa Cruz Mountains. Tony Bugica, director of farming for Atlas Vineyard Management, which farms 3,500 acres on California’s North Coast, says “2020 is like nothing we’ve ever been through.” Even as the fires diminish, wineries are battling power outages and smoke damage. Prior to the fires, the excessive heat, depleted tourism, social distancing restrictions and economic repercussions of the coronavirus pandemic were already making the 2020 grape harvest challenging.
Read more (Eater)
In an effort to help struggling farms during the coronavirus pandemic, Blue Hill at Stone Barns is expanding their fermentation program.
The upscale restaurants (Blue Hill in Manhattan and Blue Hill at Stone Barns in Westchester County) have long been at the forefront of farm-to-table dining. But, like all restaurants in New York, Blue Hill closed in March when the coronavirus pandemic broke out. Though co-owners Dan and David Barber are confident the traditional restaurant model will once again return, the brothers are troubled by the catastrophic impact on farms.
Blue Hill Farm and Stone Barns Center (a non-profit farm and educational center) have partnered to form a new entity resourcED, which surveyed over 500 farmers. A key conclusion — over a third of farms will not survive the pandemic. August sales at farms are expected to be down by 50% due to the COVID-19 pandemic, and over 30% of farmers say they are struggling to cover expenses.
“The excess product is a huge concern. That’s shaped our box program, our fermentation program,” says Andrew Luzmore, Blue Hill’s market forager.
The resourcED survey was the impetus at Blue Hill to launch their picnic dining and box program. Diners can buy a picnic dinner and eat a farm-to-table meal on the farm’s patio or lawn (physically distanced from others), still allowing Blue Hill to purchase food from local farmers. This program allows consumers to pick-up a box full of produce, dairy products, seafood or meat, all sourced from local farms.
Blue Hill’s mainstay fermentation and preservation programs, used for over 15 years to maintain food flavor and nutrients through long Northeastern winters, have also been expanded, to absorb more of excess farm production.
“The focus on preservation program is bred out of necessity, and necessity breeds creativity,” says Cortney Burns, chef, fermentation consultant for Blue Hill and author of “Bar Tartine, Techniques & Recipes” and the forthcoming “Nourish Me Home.” “What we’re doing now with fermentation at Blue Hill rides on the coattails of what has been part of the backbone of Blue Hill for years. Working here has me looking at fermentation through a different lens these days. How can we be completely in service to good agriculture? How can we create a greater economy for farms?”
Adds Luzmore: “The fermentation program has definitely expanded a lot. We’re shifting more to helping farmers with excess product.”
For example, Blue Hill recently purchased napa cabbage that would have been wasted from a Hudson Valley farmer. They are fermenting the cabbage, “making a delicious, nutritious probiotic-rich food for our diners, whilst buying up overabundant harvests,” Burns notes.
It’s conscious cooking, Burns says “We’re not just buying for the sake of preservation. We want to create variety.” Another example is how the Stone Barns Center is trialing preserving different beet varieties.
Fermented grapes and capers, buckwheat vinaigrette, peach umeboshi and whey tonic are among the creations Blue Hill has served picnic-style and in boxes. Some of the fermented food being offered is purchased from local farmers. Local cultured dairy — such as farm fresh cheese and yogurt — makes up a large percentage of their dairy box, for example.
“There are all these different ways we’re harnessing the power of fermentation,” Burns says. “We’ve had to shift our expectation of a restaurant kitchen. We need to make sure that first, the food doesn’t spoil, and second, that we have lots of probiotic rich food loaded with flavor to serve people.”
A picnic meal at Blue Hill is $195 per person and the boxes range from $45 to $170. Blue Hill is also donating boxes to families with food insecurities.
Luzmore hopes other restaurants will innovate ways they can support local farms during the pandemic. “It’s almost impossible to buy exactly the amount a restaurant needs, especially now when there’s a greater need to support farms. Considering the constant and changing flux of product coming into the restaurant for the boxes and donations, fermentation allows for a more holistic approach of using excess product.”
“Chef Dan [Barber] has said many times throughout the launch of resourcED: we’ve kind of gone from being a restaurant to a food processing facility. Blue Hill is a fine dining restaurant. We still maintain that mentality and quality, but it’s at a different level. The scale, we’re now thinking of purchasing pallets instead of pounds.”
By: Marina Jade Phillips, Trellis & Co.
The first two months of 2018 marked both my first trip to Mexico and my first bicycle tour. Living on two wheels did not slow my fermentation habit; I toted stainless steel jars of fermented vegetables in my panniers. I credit consuming lacto-bacteria with my lack of stomach troubles that can plague travelers in South America. Regularly introducing healthy bacteria into our digestive tract is a great way of inoculating our body with microbes that are on our team. The amount of attention probiotics have received in recent years is long overdue. Traditional cultures have known about the delicious and health-promoting qualities of fermented foods for hundreds of years, even before it was scientifically proven.
Backslop is Such Beautiful Word
Contamination and inoculation are two sides of the same food processing coin: the impact of a small quantity of the right or wrong material can be drastic. The former is the stuff of nightmares for food companies forced to recall tainted products, and suffering travelers perched atop or hunched over a toilet. The latter is how fermented flavors have been passed down through time, sometimes across generations, from one bottle, crock, or barrel to the next. Inoculation is so ubiquitous to the craft that traditional sausage makers gave it a name: backslop.
Backslop, unsavory as it may sound, simply refers to the practice of saving a bit of the last successful batch and incorporating it into the new one, ensuring a small number of the micro-organisms that populated the previous batch will go forth and multiply. There are several reasons why this technique is valuable to both professionals and home cooks. Foremost, the time required for complete fermentation decreases dramatically. A new jar of sliced cabbage or jug of fresh squeezed fruit juice is teeming with all kinds of bacteria and yeast, some of which will produce the desired results, and some of which will produce something inedible.
By introducing a healthy colony early in the process, desirable microbes get a head start and usually out compete less desirable ones in the race to inhabit a new environment. If those microbes have a particularly unique characteristic (champagne yeast produces more carbon dioxide than other wine yeasts, for instance), that character can be reproduced, sometimes leading to outstanding strains by which certain makers and regions become famous.
A 5-Year Love Affair
In more humble corners of the globe, far from French vineyards, I once had a relationship with a sourdough starter that lasted five years.
A sourdough culture becomes more complex with age, and as time went by she (yes, she—around her first birthday I named her Henrietta) developed her own unique flavor. One morning, I came into my kitchen and saw Henrietta’s container on the floor, licked almost all the way clean. A dog had gotten up on the counter, somehow removed the lid, and all but devoured my precious bread making ally. I scraped the dried crust of starter that remained from the edges of the bowl and rehydrated it with water.
Over the next few days I added a bit more flour and water at regular intervals, and in less than a week my robust friend was back in action. I could have sighed, cursed dogs under my breath, and made a new starter, but I was attached to Henrietta, and thrilled to revive her with such little material.
The beginning fermenter has a few options for ensuring success. Of course, there is always the option of simply hoping for the best. Usually, if the food to be fermented is fresh and healthy and the containers and hands in contact with it are clean, odds are in our favor that the microbes that make things sour and bubbly are going to win. However, a splash of the liquid floating around the top of high-quality yogurt (look for something with “active cultures”) will introduce a bit of the right bacteria and speed the process along. A small slosh of juice from a thoroughly fermented sauerkraut or brined vegetable jar will help get the next one going.
Those interested in experimenting with fermented dough will be delighted to know that a sourdough starter is incredibly easy to make: stir equal parts flour and water every day until it smells sour. Wild yeast lands on top of the mixture and is incorporated with every stirring.
Aid this process by dropping an unwashed and unsprayed berry (grapes work best) into the mixture for a couple of days (retrieve the berry before it starts breaking down). Yeast which covers the skins of all fruits will slough off and populate the latent starter. To keep this culture thriving, the sourdough baker saves a small amount of the starter and adds to it more flour and water. Starters exist that are rumored to be hundreds of years old, passed down in just this way.
Practice Safe Fermenting
Interestingly, foods that are not fermented are more prone to contamination from bacteria that can make us very ill, and in the worst cases, kill us. The culprits in large and small-scale food poisonings are often raw and unfermented vegetables. By fostering beneficial bacteria in a salty and acidic environment, we can safely enjoy raw vegetables with all their fiber and nutrient content without the risk of ingesting pathogens.
About Trellis & Co.: We started as a family business created by a bioengineer living on a homestead in one of the remotest areas in the Lower 48. When “running to the store” is a 4-hour drive, every purchase must be a robust and functional investment. Here at Trellis + Co. we design products worth investing in.
Our lifestyle inspired our line of garden-to-table kitchen tools. As gardeners, cooks, and canners, we develop creative solutions to our own kitchen conundrums and pass on that wisdom to you. Also, since we’re kind of obsessed with the planet, our products are designed to last a lifetime — keeping money in your pocket and garbage out of landfills.
Hops used to be the biggest thing in beer to create a powerful flavor — now it’s yeast strains. Brewers are using yeast strains from around the globe for the best flavor.
According to the New York Times: “For some time, it’s been a hopped-up arms race as breweries regularly double or triple the amount of hops to create stronger aromas. With breweries using the same hops, many beers are starting to smell alike. … In search of distinct aromas, brewers are embracing yeast and bacteria strains from across the globe. They’re creating beers that let each type of microbe speak its unique language, and drinkers are listening.”
DeWayne Schaaf, owner of @ebbandflowfermentations Ebb & Flow Fermentations brewery in Missouri, calls himself a “yeast nerd.” He does not use commercial yeasts in his drinks, instead fermenting with yeast strains from Scandinavian farms, bottles of Spanish natural wine and Colorado dandelions. Few hops are required in his drinks as, during fermentation, the yeast converts sugars into alcohol for the flavors.
Other fermenters featured in the article include: @omegayeast Omega Yeast (supplier of yeast strains in Chicago), Berg’n (a beer hall in New York), @alvaradostreetbrewery Alvarado Street Brewery (brewery in California), @yeastofeden Yeast of Eden (brew pub in California), @bootlegbiology Bootleg Biology (yeast lab in Tennessee), @whitelabsyeast White Labs (yeast supplier in North Carolina and California) and Lars Marius Garshol (Norwegian author of “Historical Brewing Techniques: The Lost Art of Farmhouse Brewing
Read more (New York Times)