This tasty lentil curry uses a mixture of four types of lentils. The original recipe specified equal quantities of brown and red lentils, yellow mung beans (moong dhal) and green split peas. As I did not have those on hand, I improvised and used toor dhal, urid dhal, moong dhal and channa dhal (Bengal gram dhal). The result was a 'moreish', satisfyingly 'meaty' lentil curry.