Step 1

In the bowl of a stand mixer with the paddle attachment, cream shortening and vanilla (2-4 minutes).

Step 2

Add in the confectioners' sugar, one cup at a time. If you find your mixer struggling, slowly add in milk. Use more milk for a creamy consistency; use less milk for a stiff consistency. Finally, add salt.

Step 3

Place room temperature butter and shortening in the bowl of a stand mixer. Put the entire 2-pound bag (7½ cups) of confectioners' sugar on top. Then, add vanilla, ½ cup milk, and salt.

Step 4

Turn the mixer on low and mix until all ingredients are incorporated. Turn the mixer up to medium-high and mix for 2-4 minutes. Add more milk, if needed, to reach desired consistency.