Can use curry powder instead of spices. Put lentils in 1 litre hot water to start softening. Melt butter in large pot. Add chopped vegetables, then the spices. Cook over moderate heat for 2-3 more minutes without burning, then add lentils and hot water. Cover; cook for 20 minutes. Puree if desired; add seasoning, fresh herbs & any leftover cooked vegetables. Reheat & serve with parmesan.