Powder the sugar finely using mixer grinder. You can also use store bought sugar powder directly.
Trim the brown edges of each bread and break them in to pieces. Put these bread pieces in to mixer jar and use Pulse option of Mixer to crumble them evenly.
Transfer the crumbled bread in to a wide bowl, then add 3.5 tsp of powdered sugar and cardamom powder. Give a quick mix. You can taste at this stage to adjust sweetness. Then adding milk little by little make bread crumbs dough. The dough should not be neither too thick nor too thin.
Taking lemon sized dough in your hand, shape it in to ball. Keep all the balls ready like this.
Heat oil in a pan and deep fry each of the jamun ball prepared in the previous step. Let the flame be medium so that jamun doesn't get burnt outside. Fry them till they turn golden brown and drain oil over kitchen tissue.
Finally take all the fried bread jamuns in a bowl and sprinkle rest of sugar powder. Toss them, so that enough sugar powder coats over each of them.
Easy sweet bread dry jamun is ready to gulp on Diwali festival.