Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make mint buttercream [title] Whip butter in a standing mixer. [step] Place the butter in a stand mixer that has a paddle attachment. Turn the mixer on medium-high and whip, turning off the mixer every now and then to scape down the sides and ensure that all the butter gets whipped.

Ending1: [title] Spread the buttercream on cookie sheets or on thick sheet pans. [step] Spread the buttercream on parchment paper or cake pans with parchment paper or a flexible pan liner if you have a big cookie sheet. Ending2: [substeps] While the butter is beating, be sure to turn the mixer off so you're not accidentally working the butter into the mixer. [title] Combine the starchy ingredients and whisk in the wet ingredients. Ending3: The paddle attachment is a circle-shaped device with a plate with you whisk. Scrape your whisk under whatever sour cream you are using on a small portion of the bowl. Ending4: Keep whipping the butter until it's fluffy, around 8 minutes. [substeps] If you don't have a standing mixer, you can mix the frosting by hand, but the texture will be heavier and creamier rather than light and fluffy.

Answer format: ending1/ending2/ending3/ending4