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Grilled Halibut, Aubergine, and Baby Bok Choy with Korean Barbecue Sauce

This grilled halibut with Korean barbecue sauce is an exceptional example of a diabetes-friendly meal that refuses to compromise on depth of flavour. The firm texture of the white fish stands up beautifully to the smoky heat of the grill, while the homemade glaze provides a sophisticated balance of salty soy, sweet brown sugar and a gentle chilli kick. Paired with charred baby bok choy and tender Japanese aubergines, it is a vibrant, nutrient-dense dish that brings a touch of East Asian inspiration to your table.

Perfect for a light summer supper or a healthy midweek treat, this recipe focuses on lean protein and fibre-rich vegetables. The use of sesame oil and rice vinegar adds an authentic aroma without the need for heavy fats or creams. Serve these fillets immediately after grilling to enjoy the contrast between the caramelised glaze and the succulent, flaky fish. It is a wholesome, satisfying choice for anyone looking to maintain a balanced diet while enjoying gourmet flavours at home.

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Ingredients for Grilled Halibut, Aubergine, and Baby Bok Choy with Korean Barbecue Sauce

  • 4 tablespoons olive oil or vegetable oil, divided

  • 2 garlic cloves, minced

  • 1 1/2 teaspoons minced serrano chilli with seeds

  • 80ml soy sauce

  • 60ml (packed) dark brown sugar

  • 45ml unseasoned rice vinegar

  • 45ml water

  • 1 tablespoon Asian sesame oil

  • 8 baby bok choy, halved lengthwise

  • 4 medium-size Japanese aubergines, trimmed, halved lengthwise

  • 4 6- to 200g halibut fillets (each about 1 inch thick)

  • 2 spring onions, thinly sliced

How to make Grilled Halibut, Aubergine, and Baby Bok Choy with Korean Barbecue Sauce

Heat 1 tablespoon olive oil in heavy small saucepan over medium heat. Add garlic and chilli; sauté until fragrant and light golden, about 3 minutes. Add soy sauce, brown sugar, vinegar, and 3 tablespoons water and bring to boil, stirring until sugar dissolves. Reduce heat to medium and simmer until mixture is reduced to 180ml , about 5 minutes (sauce will be thin). Remove barbecue sauce from heat; whisk in sesame oil. Transfer 60ml barbecue sauce to small bowl and reserve for serving.

Prepare barbecue (medium heat). Combine bok choy and aubergine halves in large bowl. Drizzle 2 tablespoons olive oil over and toss to coat. Sprinkle with salt and pepper. Brush fish with remaining 1 tablespoon olive oil; sprinkle with salt and pepper. Grill vegetables and fish until vegetables are tender and slightly charred and fish is just opaque in centre, turning occasionally and brushing with sauce, about 10 minutes total for vegetables and 7 minutes total for fish. Transfer vegetables and fish to plates; sprinkle with spring onions. Drizzle with reserved sauce and serve.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 17 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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