Wash the lentils until the water runs clear. This may take four or five washes. According to my mother, shortcutting this process will give you indigestion and create discomfort in your stomach. It also leaves the lentils with an earthy flavour that you don’t want.
In a saucepan over medium heat, sauté the onion in just enough oil to stop it sticking. When the onion starts to brown, add