1. To make the sauce,score the base of each tomato and blanch in a saucepan of boiling water for 30-60 seconds. Remove with a slotted spoon and plunge into ice cold water. Peel away the skins,cut the tomatoes into quarters and scrape out the seeds,then roughly chop the flesh.
2. In a large heavy-based frying pan,combine the tomatoes,garlic,chilli,60ml olive oil,sea salt and 900ml water. Bring to the boil,then reduce to a gentle simmer,cover and cook for 45 minutes. Remove the lid,increase the heat to high and cook until the liquid has thickened and reduced to about 300ml (20-30 minutes).
3. Meanwhile,heat a charcoal grill or gas barbecue to hot. Drizzle the lamb cutlets with 2 tsp extra virgin olive oil and sprinkle with sea salt. Place on the grill and cook for 2-3 minutes on each side,then remove and rest for 5 minutes. I like the cutlets charred on the outside but medium rare inside. If you prefer them well done,cook them for longer – just watch how hot the grill is.
4. Spoon the sauce onto four plates,and place three cutlets on each plate. Serve with a wedge of lemon and steamed greens.