Problem to be solved: to provide natto that improves the flora in the intestine by increasing and activating the ecol producing bacteria by adding the bittern from the deep sea water.The magnesium content per 100 g is 2500 mg to 6000 mg and the calcium content is 500 mg toThe ratio of magnesium content to calcium content is 2 toA bittern derived from deep sea water with hardness of 144000 mg / L to 383000 mg / LContains 0.8 to 1.5% by weight of the total weight of the foodNatto for increasing and activating ecol producing bacteria.Diagram
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