Grilled Bass with Green Tomato and Watermelon Salsa
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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This elegant grilled sea bass with green tomato and watermelon salsa is a vibrant celebration of summer flavours. The firm, flaky texture of the bass provides a neutral base for the punchy salsa, which balances the sweetness of red watermelon with the sharp, acidic notes of green tomatoes and a hint of chilli heat. It is a light and aromatic dish that feels sophisticated yet remains incredibly simple to prepare on a hot charcoal or gas barbecue.
As a diabetes-friendly main course, this recipe is naturally low in carbohydrates and rich in high-quality protein and heart-healthy fats. The colourful salsa adds plenty of seasonal nutrients and hydration without the need for heavy sauces or added sugars. Serve it at a weekend garden gathering as a healthy, refreshing alternative to traditional grilled meats, perhaps with a side of steamed seasonal greens or a crisp leaf salad.
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Ingredients for Grilled Bass with Green Tomato and Watermelon Salsa
350ml finely chopped green tomatoes (230g)
350ml finely chopped red watermelon
160ml minced red onion
1 (2 1/2- to 3-inch) fresh red or green chilli such as Thai or serrano, minced (including seeds)
1/4 cup chopped fresh coriander
1 teaspoon fresh lime juice
3/4 teaspoons salt
6 (170g) centre-cut pieces striped bass fillet with skin or mahimahi (1 inch thick)
1 1/2 tablespoons olive oil
How to make Grilled Bass with Green Tomato and Watermelon Salsa
Prepare gas or charcoal grill for cooking. If using charcoal, open vents on bottom of grill, then light charcoal. Charcoal fire is medium-hot when you can hold your hand 5 inches above rack for 3 to 4 seconds. If using a gas grill, preheat burners on high, covered, 10 minutes, then reduce heat to moderately high.
Toss together tomatoes, watermelon, onion, chilli, coriander, lime juice, and salt. (Do not make salsa more than 1 hour ahead or it will become watery.)
Pat fish dry, then brush with oil and season with salt. Grill fish, starting with skin sides down, on lightly oiled grill rack, turning over once, until just cooked through, 8 to 9 minutes total.
Serve fish topped with salsa.
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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