Currently browsing posts about: Vegetables

Leafy greens contaminated with toxic E. coli make eaters very sick (this is an understatement).

Toxic E. coli are excreted by cattle raised in the vicinity of lettuce and spinach fields.

But leafy green safety is overseen by FDA whereas everything having to do with food animals is overseen by USDA.

This is why the latest moves by FDA about leafy green safety are so noteworthy.

• The FDA is warning leafy green growers that they must take better precautions to prevent E. coli contamination.
• It also is warning cattle growers that they must prevent wastes from contaminating leafy green fields.

The Big Question: Will—can—the FDA force cattle ranchers and leafy green growers to adhere to food safety precautionary measures?

Let’s hope.

Here are the relevant documents:

FDA statement on release of a report on a 2020 outbreak

The findings of foodborne illness outbreak investigations since 2013 suggest that a likely contributing factor for contamination of leafy greens has been the proximity of cattle. Cattle have been repeatedly demonstrated to be a persistent source of pathogenic E. coli, including E. coli O157:H7.

Considering this, we recommend that all growers be aware of and consider adjacent land use practices, especially as it relates to the presence of livestock, and the interface between farmland, rangeland and other agricultural areas, and conduct appropriate risk assessments and implement risk mitigation strategies, where appropriate.

Report on the 2020 outbreak investigation

The analysis has confirmed a positive match to the outbreak strain in a sample of cattle feces, which was collected during follow-up investigations on a roadside, uphill from where leafy greens or other food identified in the traceback investigation were grown. While the finding does not provide definitive information on how E. coli may have contaminated product during the growing and harvesting season, it does confirm the presence of a strain of E. coli O157:H7 that causes recurring outbreaks in a more narrowly defined growing region and a potential, continued source of contamination.

Leafy Green STEC Action Plan

As outbreaks have continued to occur, despite significant efforts in recent years, greater emphasis will be needed around such complex issues as adjacent land use, agricultural water, and understanding likely routes by which human pathogens may contaminate leafy greens.

Former FDA food safety official Michael Taylor’s comment on these documents

FDA declared the recurring strain implicated in the 2020 outbreak to be a “reasonably foreseeable hazard,” which FDA attributed to the presence of cattle on land adjacent to growing fields.  This finding seems obvious and shouldn’t be surprising. The surprise, however, is that FDA used regulatory language to express its finding and spelled out the implications: farms covered by the FSMA produce safety rule “are required to implement science and risk-based preventive measures” to minimize the risk of serious illness or death from the E. coli hazard…I do not anticipate FDA taking judicial action to enforce its April 6 finding, absent egregious practices or clear negligence in a particular leafy green growing situation. I do see, however, a heightened sense of urgency at FDA and frustration that efforts to date have not solved the leafy greens safety problem. I share that frustration.    

Food safety lawyer Bill Marler’s comment

The FDA took specific aim at California growers as the cause of repeated and ongoing outbreaks, putting the responsibility of combating the outbreaks squarely on the growers.

FDA’s investigations into foodborne illness outbreaks are available from its outbreak page.  These are the ones from 2020.

Why, you must be asking, am I even asking a question like this?

Because of this study, obviously, which I somehow missed when it came out in August (thanks to toxicologist Marc Stifelman for sending it to me).

The study: Cabbage and fermented vegetables: From death rate heterogeneity in countries to candidates for mitigation strategies of severe COVID‐19.  Bousquet U, et al.  Allergy.  2020 Aug 6;10.1111/all.14549. Online ahead of print.

The hypothesis:

CAUTION:  Correlation does not necessarily mean causation.  The diets—and other lifestyle characteristics—of people in Romania and Latvia differ from those in the UK and Italy in other ways besides diet; other differences might well account for these variations.

Personally, I love cabbage in any form.

But for prevention of bad outcomes from Covid-19, I’m counting on vaccination, not kimchi or sauerkraut.

Let’ keep doing what we can to get through this year and hope that we can all be together in the next one.  Happy holidays!

(Thanks to VeggieQuest for the inspiring image)

Deborah Madison.  An Onion in My Pocket: A Life with Vegetables.  Alfred A. Knopf/Borzoi, 2020. 

Here’s my back-of-the-book jacket blurb:

Onion in My Pocket is a riveting account of how Deborah Madison’s previous 20-year incarnation as a serious student of Zen Buddhism prepared her to become the consummate vegetarian cook and cookbook writer.  We are all fortunate that she loves vegetables—and healthier as a result.

Madison is the author of more than a dozen books about vegetarian cooking.  She opened Greens in San Francisco, a restaurant that moved vegetarian cooking from the fringe to the mainstream.  Going there—or to Tassajara–during the heyday of the San Francisco Zen Center was a sublime culinary experience, well worth the long wait to get in.

Of her time at Greens, Madison writes:

At that time I had a tendency to cook richly, using plenty of butter, eggs, and cream when it made sense.  I was unsure about bringing vegetarian food into a mainstream venue, and I knew that we could always make something good when we relied on cream or buttery crusts, and that customers would like them.  Fat was easy to fall back on in this way.  Also this was 1979 and the early 1980s, an era of cream, butter, and cheese–not just at Greens but in restaurants everywhere.  Our dinners were rich, celebratory splurges, not substitutes for home cooking.  I can’t tell you how many people have told me they were proposed to at Greens, or got married there.

No wonder the food was so good!

Her cooking now is lighter, but still wonderful.

In Onion, Madison is too polite to mention what was happening at the Zen Center at the time she left to cook at Chez Panisse and explore the wider world.  That story—a #MeToo forerunner–is covered in Michael Downing’s “Shoes Outside the Door: Desire, Devotion and Excess at the San Francisco Zen Center.”

This book is about discovering the deliciousness of vegetables.  We need it.

What is one to make of a headline like this?

“CABBAGE DIET HOPE: Eating sauerkraut, coleslaw and raw cabbage ‘could protect against coronavirus.'”

I raced right to the study, fast-tracked in a not-yet-peer-reviewed paper:

Title: Association between consumption of fermented vegetables and COVID-19 mortality at a country level in Europe, by Susana Fonseca, et al.  doi: https://doi.org/10.1101/2020.07.06.20147025

The study: The investigators compared consumption of fermented vegetables (and also pickled/marinated vegetables, fermented milk, yoghurt and fermented sour milk) in the European Food Safety Authority (EFSA) Comprehensive European Food Consumption Database to COVID-19 mortality.

Result: For each g/day increase in the average national consumption of fermented vegetables (but not the others), the mortality risk for COVID-19 decreased by 35.4%.

Comment: One food—saurkraut—reduces the Covid-19 mortality rate by 35%?  This would be an astounding result for any single food.  The authors’ hypothesis is that consumption of fermented foods promotes a microbiome that helps resist infection, even, apparently, respiratory infections.

At the moment, I’m judging this study as a delicious example of why correlation does not equal causation.

Eating saurkraut is just fine if you like it.

But for preventing Covid-19?  I’m sticking to masks and social distancing while waiting for further research.

Thomas Björkman, Professor of Vegetable Crop Physiology at Cornell University wrote to ask me what I thought about this new review article about the benefits of sulforaphane, an antioxidant in broccoli.  He explains:

It is a review by Jed Fahey et al on the value of sulphoraphane in broccoli. Go right to section 4, where they discuss the ins and outs of making dietary or clinical recommendations, and getting relevant research to inform those recommendations. They are pretty thoughtful and detailed about the issues so it seems like a good vehicle for discussion on your blog and elsewhere.

They particularly note, “the clinical studies that we have performed with broccoli and broccoli sprouts have already strained the academic system to the breaking point. The food industry needs to step up.”  That idea pushes against a couple of the arguments I see you making…I just figure that access to better broccoli will mean that people eat more vegetables, and that is generally good for public health.

This was easy to respond to.  I wrote about Jed Fahey’s work on broccoli 22 years ago.

Nestle M.  Broccoli sprouts as inducers of carcinogen-detoxifying enzyme systems: clinical, dietary, and policy implications [Commentary].  Proc Natl Acad Sci USA 1997;94:11149-11151.

I think my arguments hold up pretty well, even after all this time.  See if you agree.

At the time I wrote the article, Fahey was involved in a company promoting and selling broccoli sprouts and sulforaphane supplements.  According to a unit at Johns Hopkins, that is no longer the case.

As you may know, in the late 1990s Drs. Paul Talalay and Jed Fahey founded a company to promote broccoli sprouts and other chemoprotective foods.  This company, Brassica Protection Products, no longer is involved with broccoli sprouts in the USA, but they do sell broccoli seed extracts to the supplement industry.  Paul and Jed removed themselves from any and all management, advisory, or financial relationships with that company many years ago because it created a conflict of interest with their continuing work on broccoli sprouts.

Good for them.  Smart decision.

A reader, Jeff Nelson (whose interview with me is online here), sent me a link to this Japanese study that identified a link between eating mushrooms and prevention of prostate cancer.

The study:  Mushroom consumption and incident risk of prostate cancer in Japan: A pooled analysis of the Miyagi Cohort Study and the Ohsaki Cohort Study.  Shu Zhang, et al.  International Journal of Cancer. First published: 04 September 2019. 

Conclusion: “The present study showed an inverse relationship between mushroom consumption and incident prostate cancer among middle‐aged and elderly Japanese men, suggesting that habitual mushroom intake might help to prevent prostate cancer.”

Funding: “Our study was supported by the NARO Bio‐oriented Technology Research Advancement Institution.”

I looked up NARO:

The National Agriculture and Food Research Organization or NARO is the core institute in Japan for conducting research and development on agriculture and food. Our overall mission is to contribute to the development of society through innovations in agriculture and food, by promoting pioneering and fundamental R&D. We conduct technological development to make agriculture a competitive and attractive industry, and contribute to increasing the nation’s food self-sufficiency rate.

Jeff’s question: “Is this considered commercial research? Mushrooms’ magical impact of preventing cancer?”

My response: “Gastro-patriotism“

I would classify this one as ideologically driven more than commercially driven.  Mushrooms are part of traditional Japanese diets and this institute promotes commercialization of Japanese agricultural products.

The result is far-fetched enough (mushrooms prevent prostate cancer, really?) to be suspicious, but this looks more like gastro-patriotism to me than the result of mushroom industry lobbying–if such exists, it was not disclosed.

Gastro-patriotism is a term I just this minute coined.*  It describes the promotion of nationalism and civic pride through a country’s cuisine.  Examples leap to mind with French cuisine leading the way and anything having to do with terroir.  The Greek government’s promotion of olive oil is another example.

* Addition October 29

A reader, Polly Adema, reminds me that the term is hardly original. There is, she says:

an established concept and practice of gastronationalism. It is a recognized variation of gastrodiplomacy, one getting increasing attention within various academic circles…Lots of articles will come up if you search gastronationalism in google scholar or your search engine of choice.  The term is from and grows out of Michaela DeSoucey’s 2016 book, Contested Tastes: Foie Gras and the Politics of Food.  Here is a link to an earlier DeSoucey piece: https://journals.sagepub.com/doi/full/10.1177/0003122410372226#_i11

Oops.  Apologies to Michaela DeSoucey, for not citing her excellent book, which I had read, blurbed, and posted as weekend reading, but did not think of in this context.

I was lucky to be in Ithaca for the end of the farmers’ market season on Saturday and the not-to-be-missed Rutabaga Curl, now in its 21st year.

Contestants hurl rutabagas toward a traffic marker.  The one that gets closest wins.

Ithaca’s mayor, the charismatic Svante Myrick, does the opening curl.

The event begins with the kid curlers:

This is Ithaca, after all, so there are protesters.

I’m not much of a sports fan, so I come for the performance of the Rutabaga Chorus by Ithaca’s Vociferous Cruciferous Choir to the tune of Handel’s Messiah (its last-minute rehearsal).

• You can listen to the audio of a previous performance here.
• Or watch a 2012 performance here.

I went once before in 2012 (unfortunately, the links seem to have disappeared).

But my favorite lines remain the same: “Rutabaga! Rutabaga!  Repeat refrain, forever and ever.  Rutabaga.”

Happiest of holiday seasons.