Soak the channa dal and toor dal for at least 2-3 hours and drain it. make sure that it is drained well.
Grind the soaked dal with dry red chillies and fennel seeds in a mixer grinder without adding any water. Do make sure not to make it to a fine paste.
Add chopped ingredients, asafoetida and salt to the grounded dal and mix it well.
Heat oil in a deep bottom pan in a medium-low flame.
Take small amount of the dal mixture and make a ball. flatten to a round shape. drop into the hot oil.
Cook until the vada is a golden brown and crisp.
Serve parippu vada with palayamkodan pazham and a cup of hot tea