In Reply to: Help with blackness on Pestle and posted by Tina G on Thursday, 21. February 2008 at 15:43 Bali Time:
I was told you could also use fresh garlic and oil. The more you use it the less it will give off black dust. In terms of turmeric, you can sometimes find it fresh at Herdsman Fresh in Wembley. Expensive, but you only need a tiny piece and really grind it in...