For best results, place the package in the refrigerator to thaw about half a day before your meal - overnight if you want it for lunch, in the morning if it’s for dinner. If your plans change, the chilled and still sealed package will last up to 3 days in the refrigerator. If you’re in a hurry, just put the package in lukewarm water for about 20 minutes. Remove the cake from the package...and your dessert will be ready to go. Or heat in the oven at 180°C for 10 minutes.