In short: A planetary mixer becomes necessary once meringue, marshmallow and yeasted dough enter your regular work: a hand mixer either cannot manage them or overheats. When buying, look at power, bowl capacity, the attachments and the build of the body.
The machine everyone wants first
Every beginner dreams of a planetary mixer. Video recipes and food blogs are full of attractive shots of one, and it looks indispensable.
Learning to make macarons on Italian or French meringue, mastering crisp meringue and pavlova, or getting into marshmallow work — all of these are genuinely easier with a planetary mixer. The question is whether you are doing them yet.
Power
From 800 W if enriched or yeasted dough is on the list. Below that the motor heats up under stiff dough and cuts out on thermal protection, usually at the least convenient moment.
Bowl capacity
4.5–5 litres covers home work. Anything smaller and the whisk cannot reach two or three egg whites; anything much larger and small quantities sit below the attachment entirely.
Build
A heavy metal body stays put on the worktop when kneading stiff dough. A plastic body is lighter and cheaper but walks across the surface under load, which is more than an annoyance when the bowl is full.
Attachments
Three are essential: whisk, paddle and dough hook. Everything else — mincer, pasta roller, ice cream bowl — is a separate decision and rarely the reason to choose one machine over another.
Frequently asked questions
How powerful should a planetary mixer be
From 800 W for yeasted dough. Less and the motor overheats and shuts down under load.
What bowl size should I choose
4.5–5 litres for home use. A smaller bowl will not let the whisk reach two or three whites.
Is a metal body better than plastic
Yes, for stability. A heavy machine stays still under stiff dough; a light one moves across the worktop.