Puli Inji - the name itself gets my tastebuds active. But since I have some leftover from the last week's Sadya, I am good. I can have it for lunch today :). Now it is not something that I associate as a daily menu item. We generally make it only for Onam Sadya. And they can be stored well. So you could make it before hand and not worry about it among the "n" number of items you would be making on the day of Sadya.
If you are planning for a Sadya anytime, this is a must in your menu list. No Sadya can be complete without the mixed flavor of Puli Inji- a bit of tartness, a pinch of sweet and little spiciness. So here is the recipe to the Puli Inji.