Ready for the US market: Margaret’s Finest.
Our flagship αS1 casein received a ‘no questions’ letter by the FDA, the final step before entering the U.S. market. Meanwhile it has already been evaluated by industry partners across multiple applications, including cheese, chocolate and dairy alternatives.
Next up: multiple new casein variants
αS1 is just the beginning. We’re expanding our casein platform and will invite a select group of partners along. Together, we’ll explore what these new variants can do for functionality and nutrition.


Casein – the protein that makes food amazing
Casein is the key milk protein that gives cheese its stretch, chocolate its silky texture, and sports nutrition its long-lasting protein release. It’s rich in essential amino acids and digests slowly, making it perfect for muscle recovery, steady energy, and a feeling of fullness.
Unlike β-lactoglobulin (BLG) and other whey proteins that absorb quickly, casein releases amino acids over hours, and has unique functional properties – forming gels, binding water, and withstanding heat – making it essential in cheese, chocolate, and countless other foods.
At Those Vegan Cowboys, we focus on animal-free αS1 casein, perfect for cheese and for so much more. Our stainless steel cow produces it through precision fermentation – identical in taste and function to dairy casein, but produced with 90% less greenhouse gas emissions, no animal cruelty, minimal land and water use, and with extra purity and consistency.
The future of cheese, sports nutrition, and chocolate is here – and it’s kinder, cleaner, and every bit as delicious.
Partnerin’ up on the food frontier
We partner with cheese makers, chocolate producers, sports nutrition brands, and other food innovators worldwide. With our casein, you can create authentic cheeses like camembert, mozzarella, and salad cheese, develop slow-release protein products for athletes, craft premium chocolates, or add stable foams to desserts and beverages. Our tailor-made proteins can even be designed to enhance specific product properties, from perfect melt to elastic stretch.
If your company is looking for a reliable source of pure casein for high-performance food products, get in touch with us. Together, we can shape the future of food.



The protein space just got a lot more spacious
Margaret’s Finest has become the first precision fermentation-derived casein to receive a “no questions” letter from the U.S. Food and Drug Administration (FDA), following the agency’s review of its Generally Recognized as Safe (GRAS) notification.
And now, the work on U.S. ground begins. The world’s first animal-free casein is ready to launch. Food companies (EU or US) with application ideas brewing can contact us directly via











