Super Duper Burger is using GMO fed meat provided by Niman Ranch. So many people believe that Niman Ranch is 100% natural and grass fed and even organic, not TRUE! Niman Ranch uses GMO feed to feed their cows and they do not disclose it on their website. You can see the facebook post below where they openly admit to this. I also have a couple of emails from Niman Ranch directly admitting that they are totally fine with their farmers using GMO feed, which totally contradicts what they have on their website and seems very dishonest to me. I have a post about Niman Ranch using GMOs here and the info on their website. I went to Super Duper in the city and was told by the manager that their burgers are 100% grass fed, this is NOT TRUE, and I find this kind of misinformation and greenwashing really frustrating. If you want to use regular "all natural" beef which is another way of saying GMO fed meat, then by all means do it, but you should not be saying your meat is grass fed in your advertising and your employees should understand the difference between grass fed, and just regular "all natural" meat, which again is not really "all natural" because the animals are eating GMOs, and GMOs are anything but natural. If you want to learn more about the "all natural" scam, you can read more about it in this article. Please Email Super Duper Burger and let them know you don't want to eat GMO fed meat. There are plenty of other meat producers that really are grass fed or organic and are not using GMO feed. Super Duper Burger is using Strauss Organic ice cream for their shakes which I think is one of the best dairy companies out there, Strauss is Organic and Non GMO verified. The chicken on the Super Duper Burger menu I assume is GMO fed because every chicken producer that is not organic is now using GMO feed. I think they also fry the french fries in rice bran oil, not GMO canola oil, at least when I asked that is what I was told. I am not sure about the rest of the condiments and sauces and the GMO status of those, but I will email the company to find out and post results here. Update two months later: Never heard back from the company on my questions.