Miso

1. Miso, comprising a flavonoid substance having a flavanone skeleton, in an amount of 0.01 to 5% by weight, wherein the miso is a product of fermentation with a koji mold.

2. The miso according to claim 1 , wherein the flavonoid substance comprises a flavonoid glycoside.

3. The miso according to claim 1 , wherein the flavonoid substance is at least one compound selected from the group consisting of naringin, naringenin, eriodictyol, eriocitrin. neoeriocitrin, sugar-adducts thereof, and sugar-hydrolysates thereof.

4. The miso according to claim 1 , wherein the flavonoid substance is at least one compound selected from the group consisting of hesperidin, methylhesperidin, neohesperidin, diosmin, hesperetin, sugar-adducts thereof, and sugar-hydrolysates thereof.

5. The miso according to claim 1 , which is packaged in a container.

6. The miso according to claim 1 , further comprising water in an amount of 30 to 50% by weight.

7. The miso according to claim 1 , further comprising water in an amount of 2 to 7% by weight.

8. Miso comprising:

0.01 to 5 weight % of flavonoid substance having a flavanone skeleton;

0.4 to 8 weight % of sodium:

0.4 to 10 weight % of potassium; and

30 to 50 weight % of water.

9. The miso according to claim 8 , wherein the flavonoid substance comprises a flavonoid glycoside.

10. The miso according to claim 8 , wherein the flavonoid substance is at least one compound selected from the group consisting of rutin, naringin, naringenin, eriodictyol, eriocitrin, neoeriocitrin, sugar-adducts thereof, and sugar-hydrolysates thereof.

11. The miso according to claim 8 , wherein the flavonoid substance is at least one compound selected from the group consisting of hesperidin, methylhesperidin, neohesperidin, diosmin, hesperetin, sugar-adducts thereof, and sugar-hydrolysates thereof.

12. The miso according to claim 8 , which is packaged in a container.