royal icing and butter icing

can i use royal icing ribbon on a butter icing cake? the cake is going to have a butter icing on it, but i want to have a ribbon on it. would royal icing/fondant be ok or a bad mix?

My understanding of royal icing was its used for piping, to make ribbon you would probably need fondant, something that is going to go hard quickly and light when it dries. Depending on the size of the ribbon, yes you can place fondant on top of butter cream. Suggest you allow the ribbon to dry fully ie. a couple of days allow the buttercream to set and then place it on the butter cream cake. This will ensure you have a well set ribbon that won't flatten the cake. However if your ribbon is going to stay flat on the cake, then mold it directly on the set buttercream, no need to allow the fondant to try - just depends on what type of ribbon you have in mind.

Hope this makes sense, happy cake decorating.

but will it look weird to having 2 different icings? one tats like play-do and one thats yummmmmmm!

actually im going to use ganache for decorations smile

It will look fine, like you said a buttercream cake is more delicious than a fondant cake. I'm sure it will look great. What type of decorations are you doing with ganache, isn't that just chocolate and cream?

im piping the bottom of the bottom layer and the edges of the top of the top layer. i will be writing happy birthday zoe with the ganache and might do patterns aswell going up the cke.
i want the cake to be yummmm not tasteless lol
yeah its cream and chocolate smile sickly but mmm

Sounds delicious, good luck, I'm sure it will look devine.

i'm so excited smile i want to do it now haha i might make a trial cake and give it to a random on the street hah

My work and mothers group were my ginea pigs for all my trial cakes.

yeh thats what i want to do anyway. no harm in it haha!