Also discard any lentils that appear to be damaged. [substeps] While reputable sellers do have a sorting process of their own, it is possible that their machines can miss the occasional rock or bad lentil.
[header] How to make lentils [title] Sort through the lentils. [step] Pour 1 cup (250 ml) dried lentils out on a kitchen towel, plate, cutting board, or other clean surface. Pick through the lentils, sorting out any rocks, bits of soil, or other debris as you run across them.