I am a newbie... lol I have a cake that's due on Friday morning around 10am, however the person that is purchasing the cake will be traveling with it and it won't be eaten till Sunday. I am wondering how long will it stay fresh should I make the cake tomorrow morning or should I do it tonight. It will be covered in mmf and have a mmf bow ( I will make the bow today no matter what, because I think it needs to set for a day) I then have one that is due Saturday ( and will be eaten Saturday ) however it will just be iced in buttercream and have a few fondant accents... So my question is What is a typical starting time? a day before, 2 days??
TIA.. 
If the person purchasing the cake isn't going to serve it right away, I would make it at the last possible minute. FOndant covered cakes last a little longer than buttercream iced ones, but since they arent serving right away, you need that time to benefit the customer.
For my wedding cakes that are due on Sat., I start baking my cakes on Tuesday. Some of the layers I freeze, til I crumb coat. But a well iced cake can last up to 5-6 days til cut.
Fondant seals the cake, so a day and a half ahead is perfectly fine.
I have a wedding cake due saturday and I started baking tuesday night. I baked the top tier and froze it because it's ultimately going to be frozen for a year anyway hehe. Then last night I baked the two middle tiers and sealed in seran wrap while hot. Tonight I'm doing the bottom tier and sealing the same and tomorrow I will ice and decorate and refridgerate.
Since you're doing MMF, don't refridgerate, just leave it set out lightly covered. The cake will be great.
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