Step 1

Combine the fish sauce, garlic, chilli sauce and mint and rub over lamb. Refrigerate for 30 minutes. Preheat the oven to 200°C.

Step 2

Heat oil over medium-high heat, then cook lamb racks for 1-2 minutes each side. Transfer to a baking tray and roast for 6-8 minutes until cooked through. Allow to rest for 5 minutes. (This will be rare. Cook a little longer if you prefer it well done.)

Step 3

To make the chilli-mint sauce, combine all ingredients and serve immediately over the lamb rack with a sweet potato rosti