Porkert Poppy Seed Grinder | Survivalist Forum
10514 posts · Joined 2016. #2 · Dec 15, 2017. If you aren't out to do huge quantities, any coffee grinder that uses burrs will do a fine job of making poppy seed, sesame seed, flax seed, chia seed, etc. meals. As you have discovered, a mortar and pestle definitely isn't the tool of choice for this little job.