Happy Donabe Life

Shio-koji Salmon over Butter Sweet Potatoes

Shio-Koji Sake to Satsuma-Imo no Mushi-Yaki

This dish is something I like to whip up especially on a busy day.  While marinating the salmon in shio-koji, I I can prepare all the other ingredients, then just pile them up and let the donabe do all the work. I love the slightly caramelized sweet potato in the bottom, while the salmon is perfectly cooked medium-rare (or you can cook it longer if you like the salmon to be well-done).


Fukkura-san (large)


3 - 4


  • 1 pound (450 g) salmon filet (skin on or off), cut into 6 to 8 pieces
  • 2 tablespoons liquid shio-koji (can substitute with 1 1/2 teaspoons salt)
  • 2 tablespoons butter
  • 8 oz (240 g) satsuma-imo (Japanese sweet potato), peeled and cut into 1/4″ (6 mm)-thick disks
  • 5 oz (150 g) eryngi (king oyster mushrooms) or your choice of mushroom, bottom ends trimmed, then slide into 1/4″ thick.
  • 4 oz (120 g) green beans, cut in half at an slight angle
  • 2 tablespoons sake
  • 1 to 2 teaspoons soy sauce
  • shichimi togarashi (Japanese seven-spice powder, optional)


  1. Place the salmon in a shallow bowl and add the Shio-Koji. Mix the contents well and cover with plastic wrap. Let the salmon marinade for at least 15 – 30 minutes. (You can marinade for longer time up to over night for the real umami-rich version. In this case, let it marinade in refrigerator.) Remove the salmon from the marinade and pat dry with paper towel. Set aside.
  2. Heat the butter in Fukkura-san over medium heat, and spread the satsuma-imo in a single layer. Cover with lid and cook for 3 minutes.
  3. Turn the satsuma-imo over and place the salmon on top. Add the shimeji mushrooms and green beans.
  4. Pour in the sake, then cover again and cook for about 5 minutes or until everything is cooked through. Drizzle some soy sauce to taste.
  5. Serve at the table and sprinkle some shichimi togarashi, if you like.

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