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Need help troubleshooting ganache under fondant!

post #1 of 11
Thread Starter 
Hi cake friends. Love coming to these forums but hardly ever post. I am just having a hard time with ganache so I was hoping to get some insight.

I tried the white chocolate ganache method twice recently, once with a 3:1 ratio (found it too soft), and then with a 4:1 ratio. Both times I ended up getting a bulge of ganache at the bottom of the cake, as if it was too "loose" or something.

I really thought the 4:1 ganache would work well. It fondanted great but then it developed the bulge as it sat on my counter for a few hours.

Do you think I am using too much ganache?
Was the problem that I didn't let it sit overnight? I did with the first cake (I put a plastic cake dome over it), but the 2nd cake, I just let it harden in the freezer after I ganached it.

Oh, I should mention that with both cakes, I put them in the freezer for 10 minutes before ganaching.

If the problem was not letting it "harden" overnight, my question is this: how do you keep dust and bugs out of the cakes? I feel very uncomfortable just leaving them naked on the counter overnight.

Small ones, I can cover but I'm sure I'd eventually have to make a big 16" cake - just cover it with a box or something?

Here is what I plan to try in the future:
1. making the ganache even stiffer (5:1) and using only a very thin layer (like, crumbcoat thin), then fondanting

2. the same as above, but after the ganache crumb coat, putting a thin layer of buttercream

3. using the very stiff ganache more like you would a cake spackle, just on the ridged parts of the sides of the cake, then using a thin layer of buttercream.

Any help would be really appreciated! Thanks!
post #2 of 11
Have you tried the method of filling the cake and then (before fondant is put on) putting a small weight (I use a floor tile that has decent weight to it that has been suggested here before) and letting it sit for 1 hour or 2?

This usually replicates the weight of the fondant and brings out any bulging ahead of time so you can smooth it off and then apply the fondant.
post #3 of 11
The first question to ask is can you describe your exact method for making your ganache? Are you leaving your ganache overnight to cool and thicken before applying to the cake? Ganache should set nice and solid and will not bulge from a cake! Also, what are you filling your cake with?
post #4 of 11
Thread Starter 
Quote:
Originally Posted by Emmar308

The first question to ask is can you describe your exact method for making your ganache? Are you leaving your ganache overnight to cool and thicken before applying to the cake? Ganache should set nice and solid and will not bulge from a cake! Also, what are you filling your cake with?



Using the microwave, I heated the cream to boiling then poured it over the chips. I whisked until smooth and then left it to cool on the counter (I put a sheet of plastic wrap right on the surface of the ganache). I filled the cake with a cream cheese buttercream with lemon curd mixed in and used a dam of semi-firm buttercream.

What you said about the ganache being nice and solid - it did get nice and firm, (that's why I thought it would work out) but I noticed once the fondant had been on it for a while, it was much softer. The ganache kind of oozed out the bottom with pressure from my fondant smoother. It was more the consistency of buttercream.
post #5 of 11
Thread Starter 
Quote:
Originally Posted by usmdesigner

Have you tried the method of filling the cake and then (before fondant is put on) putting a small weight (I use a floor tile that has decent weight to it that has been suggested here before) and letting it sit for 1 hour or 2?

This usually replicates the weight of the fondant and brings out any bulging ahead of time so you can smooth it off and then apply the fondant.



I will definitely try that, thanks!
post #6 of 11
Thread Starter 
Oh, and I forgot to say that I did let the ganache cool overnight in its container.
post #7 of 11
From what you have described i can't see where your problem arose, which concerns me as i have a cake in a couple of weeks which will be filled with lemon curd buttercream and covered in white chocolate ganache then fondant! The method you have used is exactly what i plan to do, having only worked with dark and milk chocolate ganache i'm now dreading working with white choc! Sorry i can't offer any advice, i will be watching to see what solutions others offer!
post #8 of 11
I do not have any answer to your question but these 3 videos are amazingly helpful and I thought you might find your answer. HTH icon_smile.gif

how to make chocolate ganache for decorating cakes Part 1 of 3 Inspired by Michelle Cake Designs
http://www.youtube.com/watch?v=qFtm8q4m4Bk&feature=player_embedded

how to ganache a cake with straight sides Part 2 of 3 Inspired by Michelle Cake Designs
http://www.youtube.com/watch?v=OgrXxYLm0Sk&feature=player_embedded

how to get sharp edges when covering a fondant cake Part 3 of 3 Inspired by Michelle Cake Designs
http://www.youtube.com/watch?v=imfDvvSZn5I&feature=player_embedded
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post #9 of 11
Have a look at this as suggested by Rylan of CC. in another forum as it might help you. Please note there are three parts to this.

http://www.youtube.com/watch?v.....r_embedded
post #10 of 11
Thread Starter 
Thanks for the video links. I will view them and hope for the best next time around.
post #11 of 11
I use white ganache all the time under my cakes, and they are filled with lemon curd and buttercream.

I use a 3:1 ratio let it sit overnight WITHOUT plastic wrap (you might find some condensation is forming as the mixture is warm) if you like put it in the fridge overnight to set.

Next day soften it in the microwave until it is like peanut butter or toothpaste.

Once you have hot knifed it to smooth it you need to let it become hard again. Either leave it on the bench for a couple of hours or put it in the fridge for an hour but you then need to let it come to room temp before putting the fondant on.

How thick are you making your ganache layer on the cake? It really shouldnt be anymore than 10mm at the most, ideal would be 5mm. PM if you need further help
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Yummy Mummy Cakes

1 in a 150 children are diagnosed with Autism

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