I learned from the local Nde how to gather, (traditionally a female activity while the males hunted) and what they do is do a light cracking of many nuts at onc

I learned from the local Nde how to gather, (traditionally a female activity while the males hunted) and what they do is do a light cracking of many nuts at once on a mill stone usually after toasting, more in a long pull across the surface than a smash, then toss the pile around letting the wind or manual blowing to get rid of the husks. Of course in hurry just use your teeth.