Sesame Tuna Burgers with Fried Shoestring Courgette
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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This elegant sesame tuna burger recipe offers a sophisticated twist on a classic high-protein meal. Fresh sushi-grade tuna is finely hand-chopped and seasoned with soy, then encased in a thick, golden crust of toasted sesame seeds for a satisfying crunch. The dish is elevated by a dual preparation of courgettes: delicate, wilted ribbons providing a fresh base, and crispy, sesame-dusted shoestrings adding a savoury, chip-like texture that feels indulgent yet remains relatively light.
Perfect for an impressive weekend dinner or a nutritious midweek treat, these tuna patties are best served medium-rare to maintain their buttery, melt-in-the-mouth quality. This homemade dish is naturally rich in omega-3 fatty acids and minerals, making it a brilliant choice for those seeking a heart-healthy, grain-free alternative to traditional beef burgers. Enjoy the contrast of temperatures and textures for a restaurant-standard experience at your own dining table.
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Ingredients for Sesame Tuna Burgers with Fried Shoestring Courgette
140g plus 2 tablespoons hulled sesame seeds (90g)
4 medium courgette (900g total)
450g well-chilled sushi-grade tuna steaks
1 tablespoon soy sauce plus additional for serving
About 1075ml vegetable oil (about 1075ml )
an electric coffee/spice grinder
an adjustable-blade slicer fitted with 1/4-inch julienne blade
a deep-fat thermometer
How to make Sesame Tuna Burgers with Fried Shoestring Courgette
Put oven rack in middle position and preheat oven to 177°C. Toast sesame seeds in a shallow baking pan in oven, stirring occasionally, until golden, 12 to 15 minutes. Cool completely. Transfer 2 tablespoons seeds to a small bowl and 60ml to grinder. Transfer remaining 180ml to a wide shallow bowl.
Halve 3 courgette crosswise, then cut lengthwise into 3/4-inch shoestrings using slicer. Toss with 1 teaspoon salt in a large sieve set over a bowl and drain 30 minutes.
Squeeze handfuls of courgette to remove moisture, then roll up in a triple layer of paper towels and squeeze to remove remaining moisture.
Finely chop tuna with a large wet knife (about 3/4-inch pieces). Stir together soy sauce, 2 tablespoons oil, 1/4 teaspoons salt, and 1/4 teaspoons pepper in a bowl, then stir in tuna. Divide tuna mixture into 4 portions. Pack 1 portion in a 1/2-cup measure, then invert onto seeds in shallow bowl. Gently press tuna to form a patty 3 1/2 inches in diameter, then coat completely with seeds and transfer to a wax-paper-lined plate. Form, coat, and transfer 3 more burgers in same manner. Chill, covered with plastic wrap, until ready to cook. Discard any sesame seeds remaining in shallow bowl.
Grind seeds that are already in grinder, pulsing until ground to a flour, then add to remaining seeds (2 tablespoons ) in small bowl.
Remove julienne attachment from slicer, then cut remaining courgette lengthwise into 3/4-inch-thick ribbons using slicer. Gently toss with 1/4 teaspoons salt in a large bowl and set aside (courgette will wilt and become tender).
Heat 1 inch oil in a 5- to 6-quart heavy pot over moderate heat until thermometer registers 166°C.
Toss all of shoestring courgette with half of sesame mixture in another large bowl, then fry in 4 batches, turning occasionally with a slotted spoon, until courgette are golden, about 2 minutes per batch. (Return oil to 166°C between batches.) Transfer courgette as fried to paper towels to drain. Toss each batch of courgette immediately with some of remaining sesame mixture.
Heat 45ml oil in a 12-inch heavy skillet over moderately high heat until hot but not smoking. Cook burgers, turning over once, about 2 minutes total for medium-rare tuna (seeds should be golden brown).
Drain courgette ribbons and divide among 4 plates, then top with burgers and fried shoestring courgette. Serve burgers with additional soy sauce on the side.
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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