Rinse lentils under cold water
Remove any debris or damaged lentils
Add lentils to a pot
Add water or broth
Use 3 cups liquid for 1 cup lentils
Bring to a boil
Reduce heat to a simmer
Cook uncovered
Simmer red lentils for 10–15 minutes
Simmer green or brown lentils for 20–30 minutes
Simmer black lentils for 25–35 minutes
Check for tenderness
Drain excess liquid
Season with salt after cooking
Serve warm or let cool for later use