Why Does My Swiss Meringue Buttercream Look Curdled or Soupy?
There’s a moment in baking that every aspiring cake decorator dreads. You’ve done everything right. You carefully separated your egg whites, gently heated them with sugar over a double boiler, and whipped them into a magnificent, glossy white meringue that holds perfect stiff peaks. The bowl of your stand mixer is finally cool to the touch. It’s time to add the butter.