(Cook rice or rice noodles separately, if using). Fill a large pot with a couple inches of water. Place a steamer basket inside. Season the salmon flesh with about ½ teaspoon salt all over, then arrange the fillets into the steamer basket, skin-side-down (to prevent sticking, you can lightly oil the salmon skin). Cover with a lid, bring to a boil over high heat, then reduce the heat to medium to maintain a rapid simmer for 5 minutes.
At this point, check the doneness of the salmon filets – they should flake easily with a fork and no longer be translucent in the thickest part. If they are very thin, they might be cooked through, if they are thicker, they’ll need a few more minutes. If they are just on the cusp of being cooked through, steam it for another minute before adding the broccoli.
Remove any filets that are cooked through, then scatter the broccoli all around. Cover and simmer/steam for 3-5 more minutes or until the broccoli is fork-tender and the salmon is cooked through.
Remove the steamer basket from the pot to cool off a bit. You can transfer the salmon to a cutting board to remove the skin, if you’d like. Keep the salmon whole or break it into chunks.
Toss your raw crunchy veg with 1 tablespoon rice vinegar and remaining ¼ teaspoon salt.
In a medium bowl or large liquid measuring cup, add the tahini, miso, and water. Mash/mix it together to dissolve the miso paste, then stir in the soy sauce and remaining 2 teaspoons of vinegar. The texture should be brothy – if it’s too thick, add a bit more water.
Assemble your bowls – add the rice or noodles (if using), salmon, and broccoli to the bowl. Pour in ¼ of the tahini broth. Top with the crunchy veg, herbs, and pickled ginger (if using).