London Grill with Soy Citrus Mayonnaise
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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This sophisticated London grill with soy citrus mayonnaise is an exceptional high-protein dish that delivers a wonderful depth of flavour. The beef is marinated in a vibrant blend of soy sauce, red wine and fresh citrus juices, ensuring every slice is tender and savoury. By searing the steak then finishing it slowly under a lid, you achieve a perfect medium-rare finish that pairs beautifully with the creamy, zesty dipping sauce.
Ideal for a weekend lunch or a light dinner, this recipe is best served at room temperature to allow the complex citrus notes to shine. The homemade soy mayonnaise adds a luxurious touch, making it a fantastic choice for entertaining. Serve the thinly sliced beef on a large platter with plenty of grilled country bread to soak up the delicious resting juices.
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Ingredients for London Grill with Soy Citrus Mayonnaise
180ml fine-quality fermented soy sauce*
120ml dry red wine
60ml fresh lemon juice
80ml fresh orange juice
3 tablespoons olive oil
1 bunch spring onions, cut into 3-inch lengths
5 garlic cloves, smashed and peeled
1/2 teaspoons white pepper
Pinch of cayenne
2 1/2 to 1.4kg top-round London grill (1 to 1 1/2 inches thick)
240ml mayonnaise
Accompaniment: toasted or grilled country bread
an instant-read thermometer
How to make London Grill with Soy Citrus Mayonnaise
Combine soy sauce, red wine, juices, 2 tablespoons oil, spring onions, garlic, white pepper, and cayenne in a 1-quart heavy-duty sealable plastic bag. Add steak and seal bag, pressing out air. Turn bag to coat steak, then marinate, chilled, turning bag occasionally, at least 4 hours.
Transfer steak to a plate and pour 2 tablespoons marinade through a fine-mesh sieve into a 1-quart heavy saucepan, discarding remainder or reserving for another use (see cooks' note, below). Bring steak to room temperature, about 30 minutes.
Heat remaining tablespoon oil in a 12-inch heavy skillet over moderately high heat until hot but not smoking, then cook steak, uncovered, until underside is browned, about 5 minutes. Turn steak over, then reduce heat to moderately low and cover skillet. Continue cooking until thermometer inserted horizontally 2 inches into centre of steak registers 49°C, 10 to 12 minutes. Transfer to a cutting board and let stand at least 15 minutes (internal temperature of steak will rise to 130-57°C for medium-rare).
While steak cooks and stands, bring marinade in saucepan to a boil, then pour into a bowl and cool completely. Whisk in mayonnaise until combined well and chill, covered, until ready to serve.
Holding knife at a 45-degree angle, cut steak across the grain into very thin slices and transfer to a platter, then drizzle with any juices accumulated on cutting board. Serve at room temperature or slightly chilled, with mayonnaise.
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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