How do I stop banana buttercream turning brown?

[fanjolina]

I'm icing a cake with banana buttercream that I can't keep refridgerated until it's served. Is the icing going to turn brown? Any way to prevent it?

[IAmTheCookieMonster]

lemon juice in the banana?

[IAmTheCookieMonster]

make normal buttercream and put slices of banana on top just before serving?

[fanjolina]

Ooh, would lemon juice prevent it? Unfortunately logistics mean I won't be able to add the banana at point of serving.

[IAmTheCookieMonster]

I don't know for sure if it would, but thats all i can think of! It helps keep fruit salad fresh, but bananas turn brown very easily.

[fanjolina]

Oops, just added lemon juice and it curdled the icing .

Hmm, prob no way to recover that is there?

[IAmTheCookieMonster]

can you start again? I'd have added the lemon to the banana before adding the banana to the icing.

[fanjolina]

That's what I did!

Could start again but only have enough ingredients (and time) to make one more batch, so think I'll stick with dull safe vanilla.