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( b" P; X3 h5 J I used coffee grinder before. ( U. }5 B( P! V' Y V! n4 L
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The 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. 5 h3 ^7 K5 O( Z$ i4 n ! c% e3 y0 i, X8 \( A; APepper powder is easy to lose smell and tasty, that's why I chose pepper.