Step 1 : Introduction to the question "3. My second wife makes this so well I had to marry her! It's a spicy lamb stew cooked slowly in a special pot, with preserved lemon and spices such as cinnamon, saffron, cumin and paprika. I eat this with couscous. What nationality am I?"
...1. Congolese 2. Tunisian 3. Moroccan 4. Ghanaian This is a 'tagine' (which is also the name of the 'special pot' mentioned in the question). The fact that it is a stew, and the mention of preserved lemon, indicates a Moroccan rather than a Tunisian tagine.