Tajine with Lamb and peas

Ingredients :

 1 kg 1/2 of lamb meat cut into pieces
 2 kg of artichokes
 2 kg of peas (or fresh beans)
 1 teaspoon of ginger
 1 pinch of saffron
 1 clove of garlic
 3 tablespoons of oil
 the bark of a candied lemon
 1 handful of olives
 the juice of a lemon