For vada:-Soak dal and rice for 8 hours next day grind well make lump free batter, add salt and baking soda Beat well,grease palm by water place a portion of the batter,make a hole my thumb and slightly place in the oil and deep fry

For sambhar:-Heat oil,add mustard and chopped veggies,spices and daal mix well,add 3 cups ov water,cover the lid and take 4 whistle,let the pressure release and mix well.

Both are ready to serve together