Heat a pan with oil, cumin seeds and red chilly. Roast them till cumin turns little brown and red chilly crisp. Next add brahmi leaves to the same pan and roast till the leaves wilt and shrink in volume.
Next in a mixer take all the roasted ingredients, grated coconut and salt. Grind all these together to fine paste adding very little water. Transfer it to a bowl and combine it with buttermilk. Brahmi tambli is ready.
Finally heat a seasoning pan adding oil, mustard seeds and curry leaves. As the mustard seeds crackle pour it over the tambli.
Very very healthy brahmi tambli is ready to relish with rice.
Notes
I have purposely used red chilly in this tambli, as I wanted a unique color.
You can use green chilly too and you'll end up with completely green colored tambli.
Do not use sour buttermilk / yoghurt, instead use fresh one.
Don't roast the leaves for long, that may vanish the goodness totally.
Adjust consistency by adding little more water or buttermilk.