Pacha mouru(Buttermilk)

I went out for Onam to have sadya(meals) at a local mallu restaurant and quite liked the mouru served towards the end. Here's the version

Ingredients:-
Curd - 1.5 cups(300 ml)
Water - 0.5 cups
Shallots(small onions)-4
Green chilli - 1 long
Curry leaves - 2 strands
Ginger - 1 inch piece
Salt(Kallu uppu is better) - to taste


Preparation:-
Crush the ingredients except curd. Add it to a blender along with curd. Whisk it nicely and add around half a cup of water. Again whisk to have a consistent texture.Transfer it to a bowl and enjoy the pacha mouru. If you don't have blender, juicer jar of your mixie will also do. Or, we can also prepare buttermilk using the traditional way by using 'matthu'.