One of the components of a bowl of ramen, tare is the flavor base that is mixed with the broth when the dish is served to define the flavor of the ramen.
Combine all elements in a saucepan over low heat
Simmer the ingredients on the lowest heat, stirring well so that the miso gets integrated into everything else and it becomes almost like a barbeque sauce consistency
After its simmered for an hour or so, remove from the heat and strain into a container to store in the fridge until its time to make the ramen