Then add diced tomatoes and cover it & cook this mixture for around 20 minutes on slow flame.

After 20 minutes add salt, sugar, red chilli powder and cook for another 5 minutes or till the mixture looks like this.

Now switch off the flame & let this mixture cool for 20 minutes then blend it into a smooth paste in a mixture grinder.

Then adjust the seasoning, add chopped basil leaves and chilli flakes & cook the sauce till you get a good thick consistency.

Finally cool the sauce & use it on a pizza base or for pasta