Hi Naina,

You can totally make a rainbow drip cake a day in advance! The cake should keep well in the fridge, and can be stored in the fridge for up to a week. Hope that helps, happy baking!

Hi Lori,

A cake filled/covered with ganache should be able to sit at room temperature for up to 2 days, but I’ve never really tested them more than about 12 hours. Ganache sets quite firmly so cakes covered with ganache hold up quite well at room temperature. However, I usually refrigerate cakes and pull them out of the fridge a couple hours before I plan to serve them.

Buttercream cakes can also sit out at room temperature for a day! But I find sometimes buttercream cakes can settle (and form bubbles/buldges) as they sit at room temperature, so I don’t usually let them sit out for more than a couple hours.

Hope that helps, happy baking!

Hi Kaitlin,

Apologies for the delayed response! Making this drip cake in advance should be totally fine. It can be made up to a week in advance and stored in the fridge.

I’ve never had any coloring bleed from the ganache into the frosting, but I also don’t live in a super humid climate. As long as the cake doesn’t have a big temperature shock (like going from the cold fridge straight into like 90F weather) it shouldn’t bleed or have condensation. I would recommend keeping the cake refrigerated until about 2 hours before you plan to cut into it.

Hope that helps for the future and that your cake turned out great <3

I am not sure if I should make it on Friday and put in the refrigerator or leave it out. I do not want the purple to bleed onto the blue. What do you think? Will the fridge help to prevent the bleeding or will it make it worse?