Yogurt sauce - Mix ingredients. Refrigerate until required.

Moroccan spice mix - Mix the spices in a small bowl.

Coat backstrap - Pat the backstraps dry with a paper towel then rub all over with 1 tbsp olive oil. Sprinkle the spice mix on the lamb backstraps - use it all! Set aside for 1 hour to marinate (if time permits, can skip).

Cook - Heat 1 1/2 tablespoons olive oil in a large skillet over medium high heat. Cook the lamb backstops for 4 minutes on each side, or until the core temperature is 59°C/138°F.

Rest - Transfer onto a rack set over a tray (or just a plate) to rest for 3 minutes. Cut into 0.75 - 1 cm / 1/4 - 1/3" thick slices. Serve with yogurt sauce!