In a pan heat oil. When hot, cumin, urad dhal, channa dhal and fry for 1 min. Add curry leaves, Red & Green chilies, tamarind and fry for ½ minute. Add beetroot, required salt, little water and cook till beetroot is done.
Allow it cool down and grind it to a coarse paste in Mixi. Add the seasoning at the end.
Notes
This Chutney is an excellent combo for Idili and Dosa.
Recipe by Sashi Recipes at https://www.sashirecipes.com/beetroot-chutney-beetroot-thuvaiyal.html