Since the frosting is made using hot caramel, it needs to chill quite a bit before it will be the right consistency. I recommend either making it the night before or with plenty of time to spare. The original recipe said to chill it for 6 hours. I chilled mine for about 3 hours half of which was in the freezer. The coconut reduction also will need to chill before using it. You can speed this up in the freezer (mine needed about an hour,) but if you have the time, do it the night before.