Heat 1 tbs of the peanut oil in a saucepan over medium heat. Add the turmeric, cinnamon, ginger, cumin, cayenne and couscous. Cook, stirring until fragrant, about 2 minutes, being careful not to burn. Stir in the stock and bring to a boil. Reduce the heat to very low, cover and cook until all liquid is absorbed, about 5 minutes. Remove from the heat and let stand for 5 minutes.