. z1 k/ A$ F+ w& Q $ j$ v, p! b1 W% K6 O( Q I used coffee grinder before. 6 }/ W' ^; r6 K$ k7 W1 D# s9 O $ O" ~' D, O. WThe right method is to dry pepper and chilli on your frying pan, then I could use my hand to grind it to small pieces or use a rolling pin.+ h; e R" X7 A& T) z
. m0 Q! l4 {( r4 f% L* [Pepper powder is easy to lose smell and tasty, that's why I chose pepper.