Wash and soak the rice for 5-6 hours
After the rice has soaked, drain and grind it to a coarse batter with very little water.
Transfer the batter to a stainless steel or ceramic bowl.
Add the yogurt to the batter. Mix well.
The consistency of the batter should be thicker than idli batter.
Allow the batter to ferment over-night or 6-8 hours.
Once the batter has fermented, add the boiled peas, grated bottle-gourd, chopped potatoes, ginger + chilies, minced turmeric, red chilli powder, jaggery and salt. If required, add some water to bring the batter to idli batter/cake consistency.
Heat 3 tablespoons oil in a small kadai over medium flame. Add half the mustard seeds, half the sesame seeds, asafoetida, cloves, cinnamon, red chillies, cashews, raisins and add the tempered mix to the rice-veggie batter.
In a well-seasoned skillet, preferably one with a handle, add 1 tablespoon oil, add the remaining mustard and sesame seeds. Pour the batter over the oil, level and cover it. Cook the handvo on a gentle flame.
Once the top of the Handvo has firmed up, and you notice a golden browning of the sides, place a plate over the top of the cooking pan, hold it with your left hand and with the right on the cooking pot handle, flip the handvo onto the plate.
Now slide the uncooked side back into the skillet. Pour some oil on the sides and cook the other side to golden brown. Remember to keep the flame low at all the times.
By now a skewer inserted in the centre of the Handvo will come out clean. Turn off the flame when that happens.
10 minutes after you have turned off the flame, transfer the Handvo on a wire rack and let the crumb set.
Cut it into wedges and serve with pickle or your choice. Green chutney also works well. And don't forget the a cup of masala chai.