Heat oil and add urad dal and chana dal.
Once it browns add the cleaned small lemon size tamarind, hing, red chilli and saute for a minute
Then add the ginger
Saute them for 3-4 minutes.
Allow it to cool down and transfer to blender.
Add salt, jaggery and grind to smooth or coarse paste.
Heat oil and temper with mustard, urad dal and curry leaves.
Once it browns add it to chutney.
Ginger/Allam Chutney is ready. Serve it with Idli, dosa or Pesarattu