Finely chop the cooked banana.To this add grated coconut,sugar and cardamom powder .Mix well and close the vessel ..Leave it for 5 minutes ..Now take small portions of dough and make balls..wet ur hand and flatten the ball in ur palm..put 2tbsp of coconut-banana mix in the center and roll it into balls by covering all the sides evenly with out spilling the mix.. Do the same procedure to make rest of the balls..Then steam the dumplings for 15 minutes.So the delicious and variety Kozhukkatta is ready