It is not exactly the same, but if you add Tylose or other gum, it will make the fondant dry more quickly and be considerably stronger. If you want to use it for flowers, it will not roll out as thinly, but it will work well for models.
I've used several different commercial gum pastes, but my favorite is Nicholas Lodge's recipe. It is easy and inexpensive to make and is very strong and stable. While it is not necessary to achieve super thin petals for flowers, this recipe will hold up to very thin, if you are going for realism.
https://sugargeekshow.com/recipe/nicholas-lodge-gumpaste-recipe/
Some one on Facebook asked this question. I have made it for 25 years or bought it etc. I though I seen a post one time that Kakeladi said she uses cornstarch added to fondant ? Yes I make nick lodge and so many other recipes. Again thought I had read on here about Kakeladi??
Oh crumb it only posted the 1st line of my long reply. Can’t use emoji—nothing after one wi post. A dig thumbs up for Nick Lodge’s recipe for sure. I just could not pull up his name:( Oh the joys of getting old! HAHA I don’t remember ever using cornstarch IN a recipe but use it for dusting work surface— usually mixed w/powder sugar
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