First, Wash and chop sweet potatoes
Transfer to a colander and run cold water. drain the water and make sure water is not dripping
Add oil and heat on a medium flame
When the oil turns hot, add mustard seeds, urad dal, and chana dal; let them splutter
Furthermore, add asafoetida and curry leaves; mix well
Add sweet potatoes; give a quick mix and spread
cover and cook for 4 minutes or till sakkaraivalli kizhangu turns to soft press stage. Mix well once in 2 minutes
add salt and turmeric powder; cook for a minute
Furthermore, add idli podi; mix well and make sure podi is well coated
finally, add rice flour and Turn down to low flame; cook for 4 minutes until the masala is well coated and the curry turns flavorful