it is the byproduct of the refinement of cane or beet sugar.
it has goodies.
http://en.wikipedia.org/wiki/Molasses
The majority of sucrose from the original juice has been crystallized but black strap molasses is still mostly sugar by calories
[1]; however, unlike refined sugars, it contains significant amounts of
vitamins and
minerals. Blackstrap molasses is a source of
calcium,
magnesium,
potassium and
iron. One tablespoon provides up to 20 percent of the daily value of each of those nutrients.
[2][3] Black strap is often sold as a health supplement, as well as being used in the manufacture of
cattle feed, and for other industrial uses.