How to fix lumpy buttercream frosting

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Buttercream icing is a mixture of fat, usually butter, and confectioners sugar. You can add cream, eggs and flavourings such as vanilla or chocolate as desired. Use buttercream for icing cakes and making decorative accents. The ideal buttercream is smooth, light and fluffy, never grainy or lumpy. To prevent lumps, sifting the icing sugar thoroughly is necessary. Make sure the butter is at room temperature before you begin. Beat the butter until it's soft, then add your other ingredients slowly, scraping the sides of the mixing bowl as you go.

Remove the icing from the refrigerator, if applicable, and allow it to come to room temperature.

Place the lumpy icing in the bowl for your standing mixer if you have one. Otherwise, using a hand mixer is fine.

Turn the mixer on a medium setting and whip the icing for a few minutes. Stir the icing around with a spoon to test the icing's consistency. If there are still lumps, continue to mix.

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