1.

Preheat grill to high heat.

2.

To make the Piri Piri Seasoning Blend, combine all ingredients for the seasoning blend in a small bowl and stir to combine.

3.

Place ground beef in a medium-sized mixing bowl and season with three tablespoons of the piri piri seasoning blend.

4.

Mix thoroughly to combine. Form the mixture into four even-sized patties, pressing firmly to force out any excess air.

5.

Grill on medium-high heat until fully cooked to an internal temperature of 71° C (160° F), about five minutes each side. Grill onion rings until tender.

6.

While the burgers and onions are grilling, make the condiment.

7.

Combine lime juice, zest, mayonnaise and rosemary in a small bowl and stir to combine.

8.

To assemble, dress the grilled patties with the condiment. Top with grilled onions and fried egg.