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dinner · dairy-free

Spanish tuna with sherry onions

Seared tuna steaks topped with slowly cooked sherry-vinegar onions and a hint of oregano. The onions do most of the work.

Time
30min
Steps
4
Spanish tuna with sherry onions, photographed from above

Ingredients

2 servings

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Allergens

Contains fish.

Worked out from the ingredient names, so it can miss what a brand adds or what a factory handles. Swaps change it too. Always read the labels, and if an allergy is serious, check every product. Allergies, food safety and our disclaimer.

Shopping list

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    Equipment

    Nothing beyond a knife, a board and the usual pots and pans.

    Helpful, not essential: Kitchen thermometer.

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    Method

    1. 1

      Slice the onions and garlic thinly. Blot the tuna dry and season with half the salt.

    2. 2

      Heat half the oil in a skillet and sear the tuna until the center reaches 63°C (145°F). Move it to warm plates.

    3. 3

      Cook the onions with the remaining oil and salt for 12 to 15 minutes, until soft.

    4. 4

      Stir in the garlic and oregano for 30 seconds, then add the vinegar and 2 tablespoons of water. Cook it down briefly and spoon over the tuna.

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