Prepare the rasavalli, which takes some effort to clean. Remember to oil your hands generously and keep aloe vera handy--oxalate concentrations in the skin do cause contact dermatitis. Plus you want to go a little slowly on this because the most intense purple of the rasavalli lives barely beneath the skin. Keeping it takes a careful scraping of the yam's outer armor.
Once the yam is cleaned, chop into chunks and boil until barely tender—about 10 minutes or less. Drain and transfer to a braai pan or simply roast on a very hot griddle until slightly browned.
Pulse in the jar of a mixer or food processor and set aside.
Place the cleaned and washed sundakkai in the same braai pan and roast until charred and soft. A chulha works, too. If you don’t have either, simply roast on a hot tava until well-charred.
Pulse the sutta sundakkai until it looks pasty (but rough is fine) then add the green chillies, and ginger-garlic (which you can also smash a little beforehand to help make a paste). Pulse a few more times to combine and break up any chunks of anything.
Combine with the rasavalli mash, and all the remaining ingredients. Mash it all together really well.
Adjust salt to taste.
Pat these into little tikkis or patties about the size of your palm and about as thick as your thumb.
You can press these into a plate of breadcrumbs if you have any handy, or dukkah—or both. But this is entirely optional
Griddle fry the cutlets on a hot pan but a low flame--slowly. Serve with a good green chutney that has all the tastes of whatever herbs you happen to have around. This enthu cutlet can take it.