Hello :) I was just looking over Nicholas Lodge's gumpaste recipe thinking I'd give it a try and was wondering what exactly 10x powdered sugar is? Here in Australia we just have pure icing sugar (which can be kind of grainy) and soft icing mixture with a starch added to it. Could I use that in the recipe and it would work? 

Interested to hear from Australian bakers - and anyone else who knows the answer! 

You can use the CSR Pure Icing Sugar from your supermarket for the gumpaste.

If you were doing fine piping/extension work where you didn't want to have your pipe clog up constantly I would source a much better grade of icing sugar.  The best available (of the suprmarket variety) is Bundaberg - normally available at IGA
 

Every now and then the manufacturers like to muck around with their product - they don't think we will notice - but us cakers are a crazy bunch when our raw ingredients start reacting differently to what we are used to.

Both CSR AND Bundaberg have come under fire in the past   LOL

A10x is the standard powdered sugar you pick up in the grocery store here in the US, I've heard of cheaper brands doing less than 10x but I've never seen it. I don't know what powdered sugar standards are like in Aus but I'd guess its similar.

AThe 10x powdered sugar does have cornstarch added to it about 3%, but the 10x refers to the fineness with 4x being the most coarse (I had to look it up, I thought it had something to do with sifting).

The way I understand it's simply finer so if you sift (which you probably should anyway) it should be fine. I believe you call it Icing Sugar or Confectioners Sugar.

I am a US baker, but I've used 10x and others interchangeably. Pam seems to know more about the brands :)

Oh, okay, I see. I would guess it's like our soft icing mixture, which is the one I use for BC - it usually has tapioca starch or similar already added to it. I might just try the recipe with both and see how it turns out. Thankyou for replying, I'd never heard of 10x powdered sugar!