Wow, RC and Weedwhacker, that is a lot of very helpful info. I had no idea about some of it.
With regard to cumin: I don't need to add it to my 'chili powder' because where some folks would use a teaspoon of it I use half a cup!
I already have the 1/32 tsp etc, so now I feel ready to take this on. Unless I need to find my handlens and count individual grains!
Thank you again.