Question: Do I use unsalted butter?

Angie emailed a really common question:

"My daughter and I took a baking class about 1-2 years ago. I have kept the recipes we received and I have a question on your buttercream frosting- for the plain unflavored buttercream recipe asks for 8 oz of Butter- is this unsalted butter? I bragged about having an awesome recipe and am now committed to making 50 cupcakes- I don’t want to ruin the frosting. Please let me know!!!!!"

If this question was related to cake batter, in a pinch, you can use salted butter and just omit any salt for the recipe.  But since this question is about buttercream, the answer is that it needs to be 100% unsalted butter.  Salted Butter = salty buttercream.  And if that's not the flavor profile you are going for, you will be displeased.

Happy Baking