Wash and dry the raw tamarind,it should not have any water
Break them into pieces and remove the extra fibres of tamarind
Take a pan dry roast the fenugreek seeds untill spluttering and keep it aside
In the same pan add oil then add mustard seeds and cumin seeds ,when mustard seeds starts crackle switch off the fame.And add tumeric powder and asafoetida,then it should be cool
Take a mixer jar add green chillies and roasted fenugreek seeds make a powder without adding water
Mash the raw tamarind pieces using a pestle and try to remove the seeds .
Now add the mashed raw tamarind pieces to mixer jar and grind it then add salt and grind it again don't add water
Then add the grind paste to the oil mixture
Mix it properly and store in a glass container for use longer time
If you are preparing large quantity then oil mixture can be done before the use
After mixture only its ready to eat but should not be touch with wet hands or water