Gut friendly Yogurt from Sourmilk now packaged in K3® cup from Greiner Packaging

New York-based start-up Sourmilk has chosen for their plain Greek yogurt Greiner Packaging’s K3® cup —  a cardboard-plastic cup that perfectly reflects the brand’s commitment to sustainability. With its natural paper-feel exterior and recyclability advantages, the K3® cup provides the perfect balance of functionality and eco-friendliness, allowing Sourmilk to present its healthy, probiotic-rich yogurt in packaging that feels as natural as the product inside.

For a product designed with health and sustainability in mind, the packaging needed to tell the same story. That’s why Sourmilk turned to Greiner Packaging’s K3® cup — an innovative polypropylene (PP) plastic cup combined with a cardboard wrap as outer layer and decoration.

The K3® cup not only reduces plastic use thanks to its extra-thin plastic walls, which are supported by the sturdy cardboard wrap, but also features Greiner’s “New-Tear-Tab” system, allowing easy separation of the cardboard and plastic for recycling. In addition, the paper-based outer layer offers a distinctive tactile “paper feel,” instantly conveying a sense of natural quality and environmental responsibility to consumers.

Offered by Sourmilk in 4.04 oz formats, the K3® offers the perfect combination of sustainability, shelf appeal, and practicality.

True to their creative spirit, the Sourmilk team also uses the inside of the cardboard wrap for hidden marketing messages, adding a playful and personal touch to every cup.

Greiner Packaging is proud to partner with the Startup — supporting them from their early start-up stage as they scale up production and expand distribution. Both companies share a strong belief in innovation, sustainability, and quality.

With Greiner Packaging’s experience and Sourmilk’s passion, this collaboration is ready to grow — delivering yogurt that not only tastes good but also does good.