Surface Grinder | Kijiji in Ontario.
I grind these by hand using sandstone and Canadian river water to make a smooth polished surface in a solid block of calcium carbonate or stone of your choice (granite, quartz, igneous rock). My pestles are tumbled in a barrel with beach sand and coral to make that smooth riverstonelike finish. Make masalas, wheat or lentil flours, pulverize cumin, cardamom pods, cinnamon sticks, peppercorns ...
