Trim and thoroughly wash/rinse the radish greens in a colander. However, if there is a lot of grit stuck to the leaves, more thorough rinsing is needed. In that case: take a large pot of water and dunk the greens into it; loosen the leaves and shake them around in the water, to release the grit and let it settle to the bottom. Then wash thoroughly in a colander with lots of fresh water.
Remove excess moisture; use a salad spinner, or spread the leaves on a towel, and allow to dry for about 10 min
Chop the greens finely: first, cut into thin ribbons, then turn the cutting board 90 degrees and slice thinly again. Transfer the greens to a microwave safe bowl.
Add all the remaining ingredients except the lemon juice to the greens in the bowl.
Do not mix; cover and cook for 1 min on high power
Remove from microwave. the volume will be much less than before.
Mix well and cook in the microwave for another minute, covered, high power. Remove, stir and set aside to cool for 5-10 min.
When cooled, add lemon juice and stir. Taste and adjust the salt as per your preference.
While the greens are cooling, prepare the seasoned oil: Heat oil in a small Tadka wok or a small saucepan. Add the Asoefetida (hing), fenugreek powder and split mustard - stir for about a minute.
Remove from heat, add chilli powder and immediately pour the hot oil on the prepared radish greens mixture. Use a bit of the greens to mop up the residual oil sticking to the wok.
Mix well: ready to eat!
Serve as a condiment with any Indian meal - rice, chapati, roti, parathas, etc.