This was our very first Milkshake in the Ninja Creami. We used Tillamook mixed ice cream for the main mix . With the Ninja Creami the Milk Shake function is currently the only function that you can use to make something instantly. All the rest of the functions require freezing whatever you have made for 24hrs. We mixed the ice cream and it took about 3 minutes I believe. The function is loud for about 2 minutes. When it was done with the first cycle, we added the Reeses Peanut Butter Cups and selected Mix-Ins.It mixed them up but did not chop. Lesson being whatever mix-in you are using, be sure to grind up to desired size beforehand. The milk shake was delicious none the less! This is a great function because you can take any ice cream and make a milk shake in 4 minutes at home!