Hi, I haven't made gumpaste from scratch. But lot of members recommend Nicholas Lodge's gumpaste recipe.
What I do is, I add 1/2 a teaspoon of CMC/ Tylose powder to 250g of fondant, and knead well. The other thing that you can do is, mix 50/50 store bought gumpaste and fondant.
HTH.
the scratch gumpaste recipe is pretty soft. Be sure to work in all the powdered sugar you can so it will be stiff enough to handle. I found it worked well for some flowers, and not for others. I preferred the texture of the Wilton GP mix to the homemade.
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