I cup lamb broth from the couscous pot (I added 1 cup vegetable broth from the Couscous Casablancaise instead)
1 tsp Harissa paste
1 tablespoon lemon juice
1-2 tbsp olive oil
1 pinch of cumin, to taste
Sprinkle of freshly chopped parsley and/or fresh coriander
Combine all ingredients in small saucepan over high heat. Beat well and pour into a small serving bowl. Serve at once.