I roast these on a cast-iron skillet before adding oil and other ingredients for tomato-chickpea curry. Sometimes I also use them in other dishes. These seeds have such a fragrant quality, my mom always comments on them if she's around when I'm cooking. I appreciate the special cumin flavor they add to food.
I always purchase my spices whole when I can and grind them myself. The difference in the flavor is literally night and day. Toasting them a bit first adds another level of flavor if you're going to use the seeds whole. Buying in bulk obviously saves a ton of money I keep them sealed and they last for a long time. I'm very glad that I found iHerb as there pricing is very good.