Firstly add 1/2 teaspoon of oil to the pan and when oil is hot add urad dal and red chilli
Evenly roast till dal turns golden brown. Transfer and cool
Add oil to the same pan and heat
When oil is hot add onions and saute till onions changes color and the raw smell goes off
Add required salt and mix well. Saute for 1 minute and turn off the stove
Furthermore, add tamarind and coconut and mix well
Transfer to a plate and cool
Add red chilli and urad to the mixie grinder and grind them first
Add the rest of the ingredients and grind into thogayal. moisture in the onion is enough to grind thogayal if required sprinkle water and grind