I have been asked to make this cake:

http://fancythatcake.com/work/storybook-princess-castle-birthday-cake/

I know the turrets in this cake as plastic, but what would you use to make these? Preferably edible? RKT?

I was thinking swiss rolls Is that a daft idea?

I have made a cake like this I used plain ice cream cones dipped in chocolate and the top was a sugar cone also dipped in chocolate and roled in sugar crystal. I don't have that picture posted, I will try to find it if your interested. Best of luck, it was messy but came out cute after you add all the details.

I made a similar cake in my gallery and I used rkt for them. Swiss rolls might not hold up with fondant on them.

I have made mine out of gelatin icing.

I've tried swiss rolls but they weren't sturdy enough. what i might try would be used food cans, washed out and the paper peeled off. then bake cakes in ther with supports between two layers high and a dowel through the centre. then cover and decorate with rolled fondant

I used RKT for this, with an ice cream cone wrapped in fondant for the cone shaped top. For the RKT, I just molded them by hand, slight crushing the cereal to make it firmer, lightly coated in candy melts for strength then wrapped in fondant. It was pretty easy.

http://www.facebook.com/photo.php?fbid=10150626621086626&set=a.248065686625.149697.247654591625&type=3&theater

http://www.lovelytutorials.com/forum/showthread.php?t=3394

http://www.lovelytutorials.com/forum/showthread.php?t=3025

http://www.lovelytutorials.com/forum/showthread.php?t=2977

Cover a length of PVC in silicone paper. Measure the circumfrence of the PVC. Cut GUMPASTE to the height you want and the circumfrence just measured. Emboss and wrap (not too tightly) around the PVC. Let dry. Your crenelations can be made using The straight frill cuter from FMM (No 9-12) Icecream cones covered in chocolate, candy melts or icing can be left plain or dipped in sprinkles. You can turn a cone upside down and crenelate it for where the princess is standing.

My turrets are a little different (my pics) but the technique works the same. I use exterior of caulking tube. (hubby's) used Edna designmeacake. gumpaste (recipe on her site) covered them in clear plastic wrap greased slight,rolled out the dough rect.cut to size and laying the tube at one edge rolled it up trimmed excess and closed seam with tylose glue. Let dry 1 hr. and slowly twisted each to make sure they would not stick and then let dry overnight. removed from tubing and air dried 3 days. Strudy and level.Cover the top/opening once dry with round gumpaste (this will be the base for your tower peaks(I used icecream cone,covered the same way.