0 C- u+ x2 r7 H; n7 ? & d3 R- a" N# D- L0 Y6 X5 q I used coffee grinder before. % [/ E, I% v6 t4 ]- H7 G - g% X) K3 Z: ?5 v! j; DThe 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. " l- e- h# h. ]- ?" F4 R# _9 R - Y$ c$ R9 Q3 A/ N8 h/ @Pepper powder is easy to lose smell and tasty, that's why I chose pepper.