You're mistaken, it's made from fermented soy beans. (isachandra.com)
It's a traditional Japanese sauce made from fermented soy beans. (mindbodygreen.com)
Miso is a salty fermented soy bean paste that combines well with sweet brown sugar and sake for a syrupy marinade that makes salmon taste so good that even salmon haters will devour it. (topsecretrecipes.com)