Note: All stones used in the testing came from the of destoning raw coffee – so are good indicators of the kinds of stones you might find in a bag of roasted coffee. What happens if a small stone makes its way into your bag of coffee and your grinder? An irreversible calamity or an imperceptible event? My 1 Cup V60 technique: https://youtu.be/1oB1oDrDkHM Our new pour over setup still life print from TensHundredsThousands: https://geni.us/THT-Still-Life 0:00 Intro 1:38 How do roasters filter stones out? 3:52 Our test parameters 4:46 Testing pt. 1 10:39 Burr inspection (with a microscope!) part 1 11:12 [More]