What exactly is pastillage? I've seen it, but can't find much about it (in English). Is it gumpaste in a different language?

Pastillage is a medium that dries very quickly and very hard It's less prone to absorb moisture than gumpaste. Here's an interesting article on pastillage for your review.

http://forums.egullet.org/index.php?showtopic=69493&st=0

Hi, you can make that yourself or you can buy it. Here is a link from Global Sugar Art.

http://www.globalsugarart.com/product.php?id=21841

I used this to do the turrets in my castle cake.

HTH.

I apologize for the delay - I just realized today that I got replies to my question! And they were very, very helpful! Thanks to you both!