Sort and rinse the lentils. Pick out any small stones or debris. Rinse under cool water until clear. This improves texture and removes dust.

Cook the lentils until just tender. Use a ratio of about 1 cup lentils to 3 cups water. Bring to a boil, then simmer. Brown or green lentils typically take 18–25 minutes. Aim for tender but not falling apart.

Season lightly, if you want. Add a pinch of salt near the end of cooking. Avoid heavy oils or lots of fat—they slow dehydration and can shorten shelf life. Aromatics and spices are fine.

Drain very well. Excess moisture makes dehydration slower and uneven. Let the lentils sit in a fine-mesh strainer for a few minutes to remove as much water as possible.

Preheat your dehydrator or oven. Set dehydrator to 125–135°F (52–57°C). For an oven, use the lowest temperature possible and prop the door slightly open for air flow if it’s safe to do so.

Spread lentils in a thin, even layer. Line trays with parchment or silicone mats. Avoid piling them up. A single layer dries faster and more evenly.

Dehydrate until very dry and hard. This usually takes 4–8 hours in a dehydrator, longer in an oven. Stir or rotate trays halfway through for even drying. The lentils should be crisp and snap when pressed.

Cool completely. Let the lentils cool to room temperature on the trays. Trapping residual heat or moisture in containers can cause condensation and spoilage.

Condition the batch. Place dried lentils in a large jar about two-thirds full. Shake once a day for a week. If you see any moisture on the glass or clumping, return them to the dehydrator to finish drying.

Store properly. Transfer to airtight containers. For long-term storage, add an oxygen absorber and use Mylar or vacuum-sealed bags. Label with the date and any seasonings used.

Rehydrate when ready to eat. Combine 1 cup dehydrated lentils with 1.5–2 cups boiling water or broth. Cover and let sit 5–10 minutes, or simmer 3–5 minutes for faster results. Drain excess liquid if needed and season to taste.