Rinse the sorghum and drain it well
Pat it completely dry
Heat a heavy pot or deep pan over medium-high heat
Add a small amount of oil if desired
Add a single layer of sorghum grains
Cover the pot with a lid
Shake the pot frequently while heating
Listen for popping to begin
Keep shaking until the popping slows
Remove from heat immediately when popping stops
Transfer the popped sorghum to a bowl
Repeat with the remaining grains in small batches
Season as desired after popping