How to Make American Buttercream

• In the mixing bowl of a stand mixer, using a paddle attachment, beat the butter on medium-high speed for a few minutes or until smooth.
• Scrape the sides and bottom of the bowl with the spatula halfway through.
• Add sifted powdered sugar and mix on low speed until sugar is incorporated.
• Then add vanilla extract or paste and a pinch of salt.
• Increase speed to medium-high and continue beating until the frosting is smooth and fluffy. 
• You can add food coloring if you like.
• If the buttercream is too dry, add some heavy cream or milk and whip again. If the buttercream is too soft, add more powdered sugar.
• Transfer buttercream into a piping or keep it covered at all times because it can start to dry and form a crust very fast.