Buttercream frosting with 2T buttermilk - refrigerate overnight or no?
Typically I leave my buttercream-frosted cakes out of the refrigerator. However, tonight I tried a new recipe that called for adding 1 tbsp lemon juice and 2 tbsp buttermilk (in addition to 1 cup butter and ~4 cups powdered sugar). Does the inclusion of cultured buttermilk warrant a night in the fridge, or is it safe on the counter? I plan on serving these in about 10 hours.
FYI: the result is a frosting that tastes like cream cheese frosting, but with a far creamier texture!
Best Answer
Considering the extremely high concentration of sugar in this style of frosting, it should be fine stored at room temperature as you usually do.
The concentration of sugar will actually help dehydrate and kill those live cultures present in both the buttermilk and lemon juice through osmosis.
Pictures about "Buttercream frosting with 2T buttermilk - refrigerate overnight or no?"
Does icing with buttermilk need to be refrigerated?
Nope! Buttercream that utilizes heavy cream (or milk or cream) does not need to be refrigerated right away. This is because there is such a small amount that is used. The large amount of sugar will render these ingredients stable for a few days on the counter.Does buttercream frosting need to be refrigerated overnight?
If you're planning on using it in the next week or so, buttercream frosting does need to be refrigerated until you need it. Simply place it in an airtight container and let it come up to room temperature before using it.Can buttercream frosting sit out overnight?
With the buttercream frosting you described, the butter isn't an issue, and \u2014 perhaps surprisingly \u2014 neither is the milk. The small amount of milk is stabilized by the large amount of sugar and considered safe at room temperature for two to three days.How long can buttermilk frosting sit out?
In general, buttercream can sit out at room temperature for up to 2 days.Does Buttercream Frosting Need to Be Refrigerated?
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Sharon McCutcheon, cottonbro, Polina Tankilevitch, Tima Miroshnichenko