Chop the chocolate into smaller pieces on a cutting board.
Place the chopped chocolate in a bowl.
Pour the cream into a saucepan.
Place the saucepan on the stove and turn on the heat.
Heat the cream to just below boiling point. Remember to stir the cream to prevent it from burning.
Immediately pour the hot cream over the chopped white chocolate in the bowl.
Let it sit for 2 minutes before stirring. Now stir the chocolate into the cream.
Place plastic wrap on top of the ganache to prevent condensation from forming on the underside of the film.
Refrigerate the ganache overnight or for at least 12 hours. Then remove the cooled ganache from the refrigerator.
Whisk the cold mixture until the bowl can be turned upside down without the ganache slipping. Fold the desired color into the ganache.
The ganache is now ready to use.