Why Can't I Use Powdered Sugar For Swiss Meringue Buttercream?
Decorating By satsuma27 Updated 12 Feb 2019 , 6:40pm by LindsayH
I have a lot in my pantry to use up since I was making American buttercream for a couple years now but want to start making SMBC ( Swiss Meringue Buttercream). No recipe I've found uses powdered sugar. What's the science behind not being able to use it?
you're making a meringue with hot eggs and sugar
I do not know the science behind it, but I really do not think it would work. I use a lot of powdered sugar making my own fondant and gum paste. Just a thought.
Many brands of powdered sugar contain small amounts of cornstarch. I've read that the cornstarch will dry out the meringue too much.
That being said, I have seen recipes for French meringues and pavlovas that use a mixture of granulated and powdered sugars. I've never tried it with an SMBC recipe, though.
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