Combine and grind in a coffee grinder
1.5 teaspoon cumin seed
1 teaspoon black peppercorns
1/2 teaspoon ajwain seed
1 teaspoon black salt
1 teaspoon coarse salt
1/4 teaspoon ground asafetida
2 teaspoon amchur
1/2 teaspoon chilli powder
1 teaspoon ground ginger