Steamed Sea Bass with Potatoes and Avocado-Tarragon Salsa

F&W’s Kay Chun dresses up delicately steamed fish and potatoes with a quick and creamy mix of avocado, grapefruit juice and fresh tarragon. Plus:  F&W's Ultimate Guide to Fish and Seafood 

Steamed Sea Bass with Potatoes and Avocado-Tarragon Salsa
Photo: © Con Poulos
Active Time:
30 mins
Total Time:
45 mins


  • 1 pound small Yukon Gold potatoes, sliced 1/4 inch thick

  • 2 tablespoons drained capers

  • 2 tablespoons extra-virgin olive oil

  • Kosher salt

  • Pepper

  • Four 5-to 6-ounce skin-on sea bass fillets

  • 3 tablespoons grapefruit juice

  • 1 Hass avocado—peeled, pitted and chopped

  • 2 tablespoons chopped tarragon


  1. In a medium bowl, combine the potatoes, capers and 1 tablespoon of the olive oil, season with salt and pepper and toss to coat. On a heatproof plate that fits inside a large enameled cast-iron casserole, arrange the potatoes in a slightly overlapping layer. Place a small heatproof bowl upside down in the center of the casserole and place the plate with the potatoes on top. Add enough water to reach 1 inch up the side of the casserole. Bring the water to a simmer, cover the casserole and steam the potatoes over moderate heat until almost tender, about 15 minutes.

  2. Rub the fish with the remaining 1 tablespoon of olive oil and season with salt and pepper. Arrange the fillets on top of the potatoes, skin side up, in a single layer and drizzle with 2 tablespoons of the grapefruit juice. Cover and steam until the potatoes are tender and the fish is just opaque throughout, about 8 minutes longer.

  3. Meanwhile, in a small bowl, toss the avocado with the tarragon and the remaining 1 tablespoon of grapefruit juice; season with salt and pepper.

  4. Transfer the potatoes and fish to plates. Top with any juices from the plate and the avocado salsa and serve.

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