I use Gulab Jamun mix of the Gits company. http://www.gitsfood.com/gulabjamun/
The problem is that even on low fire the balls get brown from out side, but don't get cooked "properly" within. When I try to cook it for a longer time, they tend to be hard.
What can I add to the mixture so that it cooks "properly" within and remains soft too? Sodium bicarbonate? or something else can work too?