A planetary mixer is a type of kitchen appliance designed for mixing, kneading, and whipping ingredients. It features a unique mixing action where the mixing bowl remains stationary while the mixing attachment moves in a planetary motion, ensuring thorough blending of ingredients. This design is particularly effective for tasks like making dough, batter, and whipped cream. These mixers come in various sizes and power levels, making them suitable for both home cooks and professional bakers. Popular brands include KitchenAid and Bosch, which offer models with different attachments for versatility in food preparation.