Hand temper Dark chocolate couverture by Callebaut 54.5% cocoaI am using Callebaut Dark Chocolate for tempering by hand.It's my first attempt ,as mentioned on the package I heated and cooled and then reheated the chocolate.but next day there were white streaks on the tempered chocolate what could be the reason for that?What do I do to get perfect tempered chocolate by hand ?Thanx.Arti.See More