can add cinnamon stick, a few gloves, cardomen pods, star anniseed, if you want to spice it up. Bay leaf.
Chicken or vege stock.
Simmer slow and gentle, till lentils soft and creamy.
Can also add the likes of, diced chorizo, ham hock, or the one I'd last weekend, lamb forquarter chops.
Numerous lentils available, brown, green, french (puy), and red lentils which cook and break down quickly and can be used to thicken soups, curries and stews.