Step 1

Using a mortar and pestle, pound cumin and coriander seeds until finely ground. Stir through paprika and oil. Place salmon on a plate and rub marinade all over. Cover and chill for 30 minutes or overnight to marinate.

Step 2

Heat a barbecue or chargrill pan to high heat.

Step 3

Brush cut-side of lime halves with extra oil and grill, cut-side down, for 2 minutes or until grill marks appear. Brush salmon with extra oil and grill, skin-side down, for 7 minutes, then turn and grill for a further 2-3 minutes or until medium rare. Transfer salmon to a serving plate with limes and rest for 5 minutes before serving.