What is the difference between a stand mixer, a food processor and a blender?
What the tool is designed to do to the food — beat air in, chop and slice, or liquidise — and buying the wrong one for the job you actually do is the most common kitchen equipment mistake.
Stand mixer. A motor driving a beater, whisk or dough hook in a bowl, with planetary action — the attachment rotates on its own axis while travelling around the bowl, so it reaches all of the contents.
What it is genuinely for: incorporating air — creaming butter and sugar, whisking egg whites and cream, making meringue — and kneading dough, where sustained power over many minutes is required.
What it is not for: chopping, slicing or liquidising. It mixes; it does not cut.
Why it is expensive: the gearbox and motor must sustain heavy loads for long periods without overheating, which is a genuinely different engineering problem from brief high-speed work.
Food processor. A motor driving a blade or disc at high speed in a bowl with a wide base.
What it is for: cutting — chopping, slicing, grating, shredding — plus pastry, pesto, breadcrumbs, hummus and anything requiring rapid reduction of solids. Frequently includes a dough function, which is faster than a stand mixer and less effective at developing gluten.
What it is not for: whipping air into things. The blade shape and bowl geometry do not aerate, so whipped cream and meringue are poor.
Blender. A tall, narrow jug with a blade at the bottom, creating a vortex that draws contents down into the blade repeatedly.
What it is for: liquids — soups, smoothies, sauces, purées. The narrow jug is essential to the vortex, which is why a processor liquidises badly and a blender chops badly.
Stick or immersion blender does the same job in the pan, and is far easier to clean — frequently the more practical choice for soup.
Which to buy first. If you bake, a stand mixer. If you cook, a food processor. If you make soups and smoothies, a blender or stick blender. Combination machines compromise on all three, though modern ones do so less than they used to.