Yes, brown lentils. I know there are other kinds/colors, but those are the only ones I see in the store.Brown lentils right
One other note: This soup gets thicker as it sits in the fridge. I add some water when I reheat it.
I could add more liquid when it cook it, but the storage container I have is really full, even after I have a big bowl when it's ready. I can't help myself. It's delicious.