Put oil into a large saucepan with onion and cook gently for five minutes then add the curry paste and kaffir lime leaf and cook for a few minutes longer. Add the lamb and stir around to coat with the curry spices then add the stock, coconut milk, fish sauce and carrot and cook for about 35 minutes, adding extra water if necessary. Then add potatoes and cook until the lamb is tender, about an extra 20 to 25 minutes. Blanch the snow peas for one minute only in boiling salted water then add them to the curry. Serve in big rice bowls over a bed of Jasmine rice then garnish with fresh coriander or mint. Serves 4 Per serving: 800 Calories (kcal); 51g Total Fat; (54% calories from fat); 14g Protein; 81g Carbohydrate; 1mg Cholesterol; 78mg Sodium Food Exchanges: 3 Grain(Starch); 0 Lean Meat; 5 Vegetable; 1/2 Fruit; 10 Fat; 0 Other Carbohydrates Converted by MM_Buster v2.0n.