Trim edges of bitter gourd and cut bitter gourd into thin slices.
In a bowl add sliced bitter gourd, add salt, turmeric powder, tamarind juice and mix well. This is optional step.
Set aside for minimum 30 minutes or more, preferably 60-90 minutes is better.
After 60 minutes, squeeze out excess juice and remove the bitter gourd slices onto a plate.
Remove matured / hard seeds from the bitter gourd slices and retain tender seeds, if any.
Preheat oven to 200 deg celsius.
In a mixing bowl, add gram flour , rice flour , red chilli powder , cumin powder , dry mango powder , salt , jaggery , asafoetida and mix well.
Add water part by part gradually and whisk well to get a flowing consistency batter (not thick, nor thin) as shown in the video.
Add 1 tablespoon of oil and mix well.
Now slide in bitter gourd slices and mix well such that batter coats bitter gourd slices.
Arrange the batter coated bitter gourd on greased parchment paper and bake for 25 -30 minutes in preheated oven at 200 deg Celsius. Alternatively, you can also deep fry in oil till its crisp.
Whilst, take 2-3 sprigs of curry leaves in a bowl, add 1teaspoon of oil and ¼- ½ teaspoon of oil, mix well and set aside.
Halfway, when the bitter gourds are baked for about 18- 20 minutes, remove from the oven. Flip to the other side, spread curry leaves on top and bake for another 4- 5 minutes till curry leaves and bitter gourds are crisp.
Remove from oven and serve along with coffee / tea .