Thank you to Barb at Honey Grove Botanicals for this hint:
I am still experimenting with the icing, but for now this is working.
I added 2 tablespoons of sodium lauryl sulfoacetate and 2 tablespoons
of baking soda to the icing recipe that you posted. I added 2-3
tablespoons of additional water to smooth it out. I use a hand mixer
on high to add more air. The icing still needs to be crumbled under
running water but it adds to the bubbles and is less resistant.
Here is a photo of Barb’s cupcakes.
Thanks Barb for the tip!
Click here if you didn’t see the original Bath Cupcake Tutorial.