01 -
Heat the grill to high, then scrub the grates thoroughly. Lower burners to maintain low, steady heat.
02 -
Combine pineapple juice, white wine vinegar, olive oil, light brown sugar, grated ginger, soy sauce, Dijon mustard, ground coriander, salt, and black pepper in a mixing bowl. Whisk until fully emulsified.
03 -
Arrange the top sirloin steaks in a shallow dish and pour over half the vinaigrette, turning to coat all sides. Drizzle some remaining vinaigrette over the asparagus and onion slice. Marinate for 20–30 minutes at room temperature.
04 -
Place marinated steaks on the preheated grill. Cook, turning once, until an internal temperature of 68°C is reached for medium doneness. Transfer to a cutting board and let rest for 5 minutes.
05 -
Add the marinated asparagus and onion slice to the grill. Grill asparagus for approximately 5 minutes until bright and lightly charred, shaking occasionally. Grill onion slice on each side until caramelised and soft.
06 -
Cut the grilled onion into bite-sized pieces. Slice the steak thinly across the grain, reserving juices. Layer butter lettuce on individual plates, top with grilled steak, asparagus segments, onion, and fresh pineapple cubes. Finish with a generous drizzle of reserved vinaigrette.