Mix all the ingredients except banana leaf an shallots.keep this mix for 20 mins.Now take a pan add little coconut oil.fry the shallots and curryleaves..add the chicken mix........cook till half done...now remove from the flame......take banana leaf and expose to flame so it doesnt tear while folding........transfer the chicken to the leaf......fold it from 4 side...tie it with a string......take a steamer or idly chembu.....steam the chicken for half hour....chicken is done...:)