Consider this broth an umami bomb and unlike anything you’ll find in the soup aisle of the supermarket. It’s a wonderful base for any Asian-inspired soup, but can also star in risottos. Or use it when braising fish such as salmon or halibut and sautéing up a bunch of sliced mushrooms.
Place ingredients in large pot and cover with 14 cups (3.5 L) cold water. Bring to a boil, reduce heat, and simmer gently, uncovered, for 1 to 1 1/2 hours, until broth has a deep, savoury flavour. Remove from heat and let cool down to room temperature. Strain into large bowl. Transfer to container and keep chilled.