California's GMO labeling ballot initiative Proposition 37 has already attracted lots of emphatic support and dissent from a host of voices, from Michael Pollan to Danny DeVito. But on Monday, a large contingent of people with a lot of credibility on food issues threw their weight behind the proposal: celebrity chefs.

Over 125 chefs, including some of the most famous cooks in America, have co-signed a strongly worded open letter penned by Alice Waters, the famously pro-organic founder of Chez Panisse in Berkeley, Calif. In the letter, Waters argues that "the future of food is at stake," so "this is the moment when we need to stand together as chefs, restaurateurs, and people who care about food to support Proposition 37."

Underneath Waters' own statement is a pledge in support of the bill:

We, the undersigned, endorse California’s Proposition 37 – The California Right to Know Genetically Engineered Food Act.

As chefs, we are on the frontlines of feeding America and we have an enormous stake in ensuring transparency in our food system. It is our duty to nourish our guests, both in body and soul. However, we can’t prepare the best food we know how when information about the ingredients we purchase is hidden from us with labels that are missing basic facts. This includes foods that are genetically engineered or contain genetically modified organisms (GMOs). While Proposition 37 does not require restaurants to label their food as genetically engineered, it provides chefs the ability to knowingly source ingredients made without GMOs.

Fifty countries around the world—representing more than 40 percent of the world’s population—already require GMO labeling, including all of Europe, Japan, India and China. Polls show that more than 90 percent of Americans want to know if their food is genetically engineered.

We demand the right to know what’s in our food and we are adding our collective voices to this movement!

The celebrity chefs who've already signed the letter include Mario Batali, Jacques Pepin, Cat Cora, Michelle Bernstein, Bill Telepan, Dan Barber and Floyd Cardoz.

Also on HuffPost:

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  • Michael Symon And Lay's Potato Chips

    Earlier this year, Food Network star and James Beard Award-winning chef Michael Symon <a href="http://www.marketwatch.com/story/lays-potato-chips-teams-up-with-eva-longoria-and-iron-chef-michael-symon-to-invite-consumers-to-create-the-next-great-potato-chip-flavor-2012-07-20-1218310" target="_hplink">announced a partnership with Lay's potato chips</a> as the company launched a contest to find its latest chip flavor. "I am constantly impressed with the range of flavor combinations possible in the culinary world, which presents an exciting variety of options for the next great potato chip," Symon said in a release. But would Symon ever serve it in his restaurant?

  • Paula Deen And Diabetes Medication

    No one knows how to turn heads quite like Paula Deen. The Southern cooking star timed her announcement that she was <a href="http://www.nj.com/entertainment/celebrities/index.ssf/2012/01/paula_deen.html" target="_hplink">shilling for Novo Nordisk's medication diabetes medication, Victoza,</a> with the revelation that she suffered from Type 2 diabetes, which can result from eating too much fattening food.

  • Rachael Ray And Dunkin' Donuts, Dog Food

    Yes, <a href="http://nutrish.rachaelray.com/" target="_hplink">Rachael Ray's dog food line</a> is called "Nutrish." It's technically not an endorsement -- it's part of Ray's huge line of products -- but it's too crazy not to include. When was the last time a major food personality created his or her own line of dog food? It's not new either; the Food Network personality has been <a href="http://www.seriouseats.com/2008/07/rachael-ray-launches-line-of-dog-food-nutrish.html" target="_hplink">offering the line since 2008</a>. Maybe we should feel bad for making fun of it: all proceeds go to a charity that helps at-risk animals through adoption, medical care and training. We don't, however, have qualms about taking a dig at her other endorsement: Dunkin' Donuts.

  • Edward Lee And KFC

    When KFC <a href="http://www.huffingtonpost.com/2012/05/31/colonel-sanders-autobiography-free-download-facebook_n_1560165.html" target="_hplink">unearthed the supposedly long-lost manuscript</a> by founder Colonel Sander's, the chain <a href="http://eater.com/archives/2012/05/29/edward-lee-now-shilling-for-kfc-because-why-not.php" target="_hplink">enlisted <em>Top Chef</em> Texas contestant Ed Lee </a>to help out with videos showing modernized interpretations of classic Colonel Recipes. "I really wanted to make this one recipe, it's called the upside down peach cobbler," Lee explains in one of the videos. "Which is great because I actually make a peach cobbler at my restaurant." Would the <em>Top Chef</em> judges approve?

  • Spike Mendelsohn And Acid Reflux Medicine

    In May, <em>Top Chef</em> star Spike Mendelsohn made the controversial decision to <a href="http://dc.eater.com/archives/2012/05/02/spike-mendelsohn-now-hawking-acid-reflux-medication.php" target="_hplink">hawk acid reflux medicine Dexilant for Takeda Pharmaceuticals</a>. His duties include offering "lifestyle tips" and cooking with people who suffer from acid reflux disease. At least Mendelsohn can personally relate to Dexilant users -- he suffers from acid reflux himself.

  • Marco Pierre White And Knorr Stock Cubes

    In his heyday, Marco Pierre White was the youngest chef ever to have been awarded three Michelin stars. Although that distinction has since been surpassed by younger chefs, White retains a certain level of fame even as his disciples Gordon Ramsay and Curtis Stone take up most of the spotlight. That remaining cache seems to have <a href="http://www.guardian.co.uk/lifeandstyle/wordofmouth/2009/oct/13/gadgets-chefs-product-endorsements" target="_hplink">secured him an endorsement deal with Knorr homestyle stock</a> -- though we can't imagine White ever using the jellied cubes in his own kitchen.

  • Dale Talde And Sam's Club

    <em>Top Chef</em> star Dale Talde has a deal too, with Sam's Club. A member of the store's "Simply Delicious Chef Brigade," Talde is featured in <a href="http://www3.samsclub.com/meals/see-whats-cooking/korean-grilled-ribeye" target="_hplink">several how-to cooking videos</a> on Sam's Club web site. Our question: is that where he does his produce shopping?

  • Tom Colicchio And Diet Coke

    Speaking of <em>Top Chef</em> judges, Tom Colicchio has had a long-time endorsement of his own...with Diet Coke. We think Epicurious' blog posed the question in our minds best with its post titled "<a href="http://www.epicurious.com/articlesguides/blogs/editor/2009/02/tom-colicchio-a.html" target="_hplink">Tom Colicchio and Diet Coke: Standout or Sellout?"</a>

  • Lorena Garcia And Taco Bell

    Gourmet Taco Bell? That's what Lorena would have you believe. The Miami chef, who stars on season 4 of <em>Top Chef Masters</em>, recently <a href="http://eater.com/archives/2012/07/13/taco-bell-chef-lorena-garcia-breaks-her-legendary-silence-on-molecular-gastronomy.php" target="_hplink">helped the fast food chain design its Cantina Bell menu</a> -- though some say it's just a <a href="http://eater.com/archives/2012/01/11/taco-bell-vs-chipotle.php" target="_hplink">rip off of Chipotle offerings</a>.

  • Alex Guarnaschelli And I Can't Believe It's Not Butter

    I can't believe it's not butter? More like we can't believe Alex Guarnaschelli is <a href="http://blogs.villagevoice.com/forkintheroad/2011/01/alex_guarnasche_1.php" target="_hplink">shilling for the fake butter company</a>, as is <em>Sex and the City</em> star Kim Cattrall. Are we to believe Guarnaschelli -- who cooks at the restaurant Butter in Manhattan -- actually serves this stuff? Ads featuring Guarnaschelli say that the chef "always has I Can't Believe It's Not Butter! on hand for wherever her culinary inspiration may take her." Sure...

  • Alton Brown And Welch's Grape Juice

    Food Network star and kitchen tech guru Alton Brown famously <a href="http://www.doctoroz.com/videos/alton-brown-food-lists-weight-loss" target="_hplink">dropped about 50 pounds</a> by changing his diet, so his <a href="http://gothamist.com/2011/10/05/alton_brown_is_learning_to_love_twi.php" target="_hplink">grape fruit juice endorsement</a> has us scratching our heads a little bit. Sure, Welch's is adamant that its product is made with 100% juice -- but even so, some health experts say that <a href="http://www.cbsnews.com/2100-204_162-673229.html" target="_hplink">fruit drinks can be almost as bad as soda</a> when it comes to weight gain. We admit, this is not the most egregious chef sponsorship, but come on, does anyone even like grape juice?

  • Aarón Sánchez And Bud Light

    We're not sure Bud Light is often a chef's first choice when he or she orders at a bar, but that didn't stop TV chef Aarón Sánchez from teaming up with the beer for a summer grilling campaign aimed at a Latino audience, "Amigos y Carne Asada." Sánchez, who's appeared on shows like Iron Chef America and Chopped, signed on to host a series of parties, cook-offs and giveaways. In a release, he called the partnership "a perfect match."

  • Fabio Viviani And Domino's

    Oh, Fabio. You were one of our favorites on <em>Top Chef</em>. What would Tom Colicchio say about your <a href="http://eater.com/archives/2011/09/26/fabio-viviani-now-starring-in-a-dominos-pizza-commercial.php" target="_hplink">Domino's endorsement</a>? (Probably nothing, since he's working with Diet Coke) All the same, we're flabbergasted by Viviani's move to promote "artisanal"-quality pizza. Sheesh.