. It has a
light tomtato gravy, but no vegetable oil. Like canned salmon, it includes
bones that are somehow softened by the heating-canning process. Contains
lots of protein, calcium, and fish oil. Comes from Chile.

Just wondering about its magnesium content. Keep in mind that a jack
mackerel is only a 11" (28cm) fish that doesn't live for anywhere near as
long as a tuna.

Could have some as a treat once in a while.