Toasting Dry Spices
Spices are at their peak fragrance just after toasting. Toast in small batches as needed. Preheat the oven to 325 degrees. Spread the spice in an even layer on a sheet pan and toast until just fragrant, 7 to 10 minutes on average.
Alternatively, warm a dry pan over medium-high heat, add the spice to the pan, and toast, tossing occasionally as it heats, until just fragrant. Timing will depend on the spice, but should average 5 to 7 minutes. Allow to cool completely before grinding.