Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make bacon frosting [title] Cream the butter and sugar. [step] In a medium-sized bowl, cream the butter and powdered sugar using an electric or hand blender on high speed for about two minutes. Cream until it's light, fluffy, and fully blended.

Ending1: [title] Carefully pour in the milk and vanilla extract. [step] Blend again on low speed for about a minute. Ending2: Blend until light and fluffy and blend until smooth, about four to six minutes. [title] Pour the buttermilk and cream into the beaters. Ending3: [substeps] Making the powdered sugar ahead of time will ensure that you will have enough to drink it before adding it to the frosting. While you can use an electric mixer to do this, refrigerate the softened butter overnight before making the frosting. Ending4: [substeps] Adding vanilla pods, if making your own, is optional. Refrigerate if you'd like a sweetened frosting.

Answer format: ending1/ending2/ending3/ending4