For Diane, who asked about flax:
Grinding flax seeds in a coffee grinder dedicated to seeds would be an
excellent choice. Flax seeds go rancid very quickly when ground into meal,
so that is likely why they are not often sold ground. Refrigerate the
seeds and grind them right before using them. Clean the grinder often, to
prevent rancidity.
Flax is an excellent source of Omega-3 fatty acids, something you are
likely to hear more about if you pay attention to health topics. If the
seeds are used whole and not ground into meal, they are not digested at
all, and their goodness is virtually completely wasted.
Happy baking,
Carolyn