Instead of buying ground cumin, buy fresh cumin seeds, dry roast them lightly in a pan, then grind them yourself. Replace your stock frequently - like other dried spices, cumin quickly loses its ...
"I purchased 400 grammes of cumin seeds for Tk 4,000. The seeds were soaked in water for 16 hours for germination before those were planted in the field in early Deceber. The saplings are now growing.