Arhar Dal fry is a pretty common and probably the most used lentil in India. South Indians eat it a lot as it is a primary ingredient in Sambar.
We are sharing the southern style of flavoring (we call it tadka in North India). If you are looking for the Punjabi flavor, you just need to replace the tadka provided later in this recipe with the Punjabi Tadka.
Arhar dal is also known by the name of Toor Dal. If you are shopping outside India, you would probably see the packets marked with Toor dal instead of Arhar. Don’t worry, they are same and you can buy it. Arhar Dal naming is more popular in north Indian states. Some people might also call it Yellow Dal.