Don’t be alarmed – it is simply struvite, a naturally occurring mineral that develops in the can during storage. It can be present as smaller crystals that impart grittiness to the product or as larger crystals 5-8 mm long. Struvite is not harmful and will readily dissolve in the digestive juices of the stomach; it is also extremely rare, occurring in only 2.4 out of every million Sockeye Salmon cans we sell, for example.
How can struvite be distinguished from glass? Place crystals in a few drops of hot vinegar and they will gradually dissolve, while glass will not. If you have any concerns or questions about struvite, please don’t hesitate to contact us.