Some people will make their own mussels escabeche and actually go ahead and can them in a manner that safely preserves the mussels for over a year. While that preservation approach is beyond the scope of this article, you can find numerous resources and videos online. The same can be said for other small fish like anchovies—what an amazing preserved product.
If you are in the supermarket and find a decent brand of mussels escabeche in a tin can, buy a tin try them out! I didn’t discover them until my mid-thirties--they are just really delicious.
With this particular mussel recipe provided above, your mussels can be safely stored covered in the fridge for 5 days.