Imagine buttercream as a fluffy cloud. In a dry, cool room, that cloud stays perfect. But walk into a humid kitchen on a summer afternoon, and your buttercream starts to sweat. The sugar can absorb moisture from the air, making the frosting grainy or sticky.
Ever noticed how your cookies get soft left out on a rainy day? Same logic applies. So if your kitchen feels like a tropical rainforest, maybe pop that buttercream in the fridge after a few hours. Trust your gut—and your hygrometer, if you’re extra.
How to Tell If It’s Gone Bad
Here’s the good news: buttercream is really obvious when it’s unhappy. If you see mold (usually green or fuzzy spots), a weird watery separation, or if it smells sour or cheesy—toss it. But honestly, most buttercream will just start to look sad before it becomes dangerous.
A little crust on the surface? No biggie. Just scrape it off and rewhip the rest. Buttercream is forgiving like that—it’s the golden retriever of frostings, always wagging its tail ready for a second chance.
The Best Buttercream Frosting Recipe - From Michigan To The Table
