Whenever am making a south indian dish, be it idli, dosa, uttapam, or pongal, I prefer to make chutneys that goes with it, else somehow I find justice is not done to the food. Two most common chutneys that I make are 1) Coconut Chutney and 2) Onion Tomato Chutney. Both of these are easy to make (Who does not like easy recipes?), as well does not take huge effort and ingredients for this chutney are available in generally in kitchen cupboard.
When was the last time you visited an authentic south indian restaurant? If you have been there, yo will find a coconut based chutney served normally along side dosa, idli, etc. Being a north-indian (read bought up in sleepy town), I was less exposed to all south-indian cuisine, so when I got to Delhi (thankfully has got some decent south-indian food serving restaurants), I not only familiarised with scrumptious south-indian taste, I learnt lot more about south-indian cuisine.
Rajma does not need any introduction for an Indian household. Likewise Kidney beans is widely known term in west too. Having said that Rajma has not been so popular as Chole (Chick Pea) or Samosa in west. Objective of my recipe here is to familiarise this to my audience in west as well as for the from Indian subcontinent to suggest how to make restaurant style authentic punjabi rajma masala.