[Ja...] Posted February 2, 2018 Share Posted February 2, 2018 I bought a granite mortar and pestle and I noticed that when I rub my finger across the inside of it, there is residue on my fingertip. Is it safe to use? Link to comment Share on other sites More sharing options...
Guest [ba...] Posted February 2, 2018 Share Posted February 2, 2018 Wash it thoroughly. It should be fine. Link to comment Share on other sites More sharing options...
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