Onion Sambar Recipe is less similar to the 'Arachuvitta Sambar' but I have used only shallots which lends flavour to the sambar.

Arachuvitta sambar is specially prepared on all festive occasions, especially on Tamil New year, along with rasam, potato curry, as a spread

This tiffin sambar has been prepared using carrot and potato but it can be made plain with shallots alone, it tastes divine in its own way.

South Indian sambar prepared with methi leaves and other ingredients.