You may increase or decrease mangoes based on how sour you want the dal. For 100g Lentil; 1-2 mangoes work fine.
You can add a few green chilies as well.
Some people add ginger as well, however, I prefer the tok dal as simple as possible and dominated with the flavor of green mangoes.
Increase or decrease the sugar based on your need. You can skip it altogether as well.
Keywords: tok dal recipe, toker dal recipe, kacha aam diye toker dal recipe, debjanir rannaghar