Pull the plant up firmly by the base to harvest the entire plant if all the pods look mature. Wait until the plant begins to turn yellow and pods become hard and a brown to yellow-brown color. The pods mature quickly over the course of several days, so monitor them carefully because they may shatter. Put the plant on the ground, and continue pulling up the rest of the plants.
Let the plants dry for one to two weeks on a drying rack or on the ground.
Remove the pods from the plant when they are dry. Cover the pods with a layer of paper towel on both sides. Roll a rolling pin over them on a hard surface to break them open. Discard the broken pods, and use the unshelled lentils immediately.