Here is SugarShack’s BC recipe:
_*Sugarshack’s Buttercream Icing
Ingredients
5 generous cups of hi ratio shortening
5 pounds powdered sugar
flavorings to taste
hot liquid
Note: make the liquid by mixing one cup of hot water with one cup of powdered coffee creamer. Use only the amount you need to get the consistency you prefer.
Instructions
Cream liquids and shortening until smooth. Add powdered sugar in a slow steady stream on speed one. When all the powdered sugar is in there, go to speed 6 until very smooth. Scrape down bowl sides frequently. _*
This recipe makes a very large batch; but you can easily cut it in half.
I have ordered the High Ratio Shortening online before – maybe you can google it.
You can flavor it by using any flavor of coffee creamer (I love using Hazelnut in mine)
If this recipe is not ‘white’ enough, add just the tinyest bit of violet icing coloring until you get the hue you’re looking for.
It does not require refrigeration and it crusts just fine.
Hope this helps.
Chris