Glass shard look-a-like in canned salmon

I love canned/jarred salmon. I usually do about 4 cases a year for my family of 4. The other day I opened a jar and dumped it into a bowl. I immediately noticed what looked like a glass shard on the bottom. I figured the jar must have failed and threw the whole thing in the garbage as not to risk swallowing glass. Opened up another one and same thing. As I was cursing "Kerr" the maker of the jars, I did a quick google search and found out that it wasn't glass but rather "struvite crystals" which are normal in canned seafood. They crush down like table salt and are completely edible. Just thought I'd share so no more salmon gets wasted.

we also can several cases of lightly smoked salmon each year and some tuna; have not seen that yet, thanks for sharing the info.  cheers, roger

We havent canned salmon in years, but we used to find those occasionally. Never any that big though. We thought it was broken glass at first also. They are very hard and quite surprising when you bite down on one.

For all you nerds out there, Struvite is magnesium ammonium phosphate, and it's also the most common urinary tract stone in dogs and cats! There, I saved you some googling!


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