Roast rack of lamb with Moroccan spices

Name: Roast rack of lamb with Moroccan spices
Ingredients: 5 tbsp olive oil; 1 tbsp harissa paste (use 1½ tbsp if you like it hot); ¼ tsp cumin; ¼ tsp turmeric; ¼ tsp paprika; ¼ tsp ground coriander; 20g pack flatleaf parsley chopped; ½ small lemon juice only; 1 rack of lamb (6-8 cutlets, see tip, below); 2 carrots peeled and cut into chunks; 100g couscous; 150ml vegetable stock; 1 satsuma juice only; ¼ tsp ground allspice; ½ x 20g pack of fresh mint chopped; ½ red onion finely chopped; 50g flaked almond toasted; Greek yogurt to serve