This is a traditional modelling paste made from sugar but with the addition of edible gum like Gum Tragacanth, .C.M.C.or Tylose.
There are also many named or brand names that it may be known as Gum Paste, Petal Paste or Sugar Florist Paste. This paste has been developed so that it can be rolled out finely and dry hard, making it suitable for sugar flowers, high detailed moulds and top decorations.
Sugar flowers are an extremely popular feature of many cakes especially for weddings enabling the sugar artist and cake decorator to hand craft both simple and highly detailed flowers and leaves.
This is a product out of the UK there is a few places that you can get it in the states... When I get back this afternoon I will search it out for you as to where to buy it and link it for ya..
But untill then this give you a but about the stuff... I have some cameing from www.Countrykitchensa.com
if you want to look there and try to find it . it comes in a powder that you add water to make it or it comes in a foil package all ready made..