If So, Does It Negatively Affect the Collagen Levels?
At Kettle & Fire, we use a highly specialized process called retorting to ensure that our bone broth remains good to drink. During this process, the broth is packaged and sealed in an airtight aseptic environment and sufficient heat is applied to ensure that it's sterile according to USDA regulations. Retorting produces a shelf-stable food product that does not require refrigeration while in its sealed carton.
Apart from being safe to drink, our bone broth also remains packed full of collagen. To be extra sure that we are packing all the goodness into our cartons, we had two third-party companies test our bone broths for collagen content (as well as the full amino acid profile). Based on their findings, the results were as follows:
Our Chicken Bone Broth and Chicken and Mushroom Bone Broth both have 6 grams of collagen per carton.
Our Beef Bone Broth has 10 grams of collagen per carton.
To add to our specialized production method, we also have distinct packaging that contributes to the reason why are bone broth is shelf-stable for two years without the use of preservatives.