Don’t be alarmed by glass-like crystals that you may find in your canned seafood. They are simply Struvite (magnesium ammonium phosphate), a naturally occurring mineral, that develops in the can during storage. They are sometimes present as small crystals that impart a grittiness to the product or they may occur as crystals 5-8 mm long. Struvite is not harmful and will readily dissolve in the digestive juices of the stomach.
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.
Struvite is extremely rare. For example, the incidence of struvite in our sockeye salmon is 2.4 in 1,000,000 cans.
If you have any concerns or questions about struvite, please don’t hesitate to contact us. We are more than happy to answer your questions and always make it a priority to ensure that our customers are satisfied.