What is a appliance used for making cake batter and mashing potatoes?

The appliance you're looking for is a stand mixer.

Here's why:

* Cake Batter: Stand mixers have powerful motors and attachments like beaters and whisks that are ideal for mixing cake batter. They can handle heavier ingredients like butter and eggs, creating a smooth and airy batter.

* Mashing Potatoes: Many stand mixers come with a potato masher attachment. This attachment efficiently mashes potatoes to the desired consistency, removing lumps and creating a smooth texture.

While other appliances like hand mixers can also be used for these tasks, a stand mixer offers more power, versatility, and ease of use.