![The blue area on the left is a pressurised air sac, with the circle above it being a valve. What is it for on a pouch of creme fraiche? : r/whatisthisthing The blue area on the left is a pressurised air sac, with the circle above it being a valve. What is it for on a pouch of creme fraiche? : r/whatisthisthing](https://i.redd.it/tshm9nloom061.jpg)
The blue area on the left is a pressurised air sac, with the circle above it being a valve. What is it for on a pouch of creme fraiche? : r/whatisthisthing
![Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging](https://www.ecolean.com/media/m4tl0gtr/sour-cream-schmand-creme-fraiche-hellofresh-in-germany.png)
Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging
![Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging](https://www.ecolean.com/media/rr1h3dld/hello-fresh-productimage-med-svenska-creme-fraiche.png)
Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging
![Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging Ecolean and HelloFresh collaborate to increase sustainability commitment - Ecolean - a lighter approach to packaging](https://www.ecolean.com/media/o05nbfsr/hello-fresh-ecolean-product-image-2020.png)