In a slow heating pan, roast the whole red chili, cumin seeds, mustard seeds, fennel seeds, fenugreek sees, coriander seeds and nigella. As it become aromatic, remove from heat and take time to cool it down.
Add the roasted spice in grinder and also add salt, kashmiri red chili powder, paprica, garlic powder, ginger powder, coriander powder, turmeric powder, asafoetida, mango powder and garam masala powder.
Grind all the ingredients to make fine powder. Achar masala is ready to use.