How to Choose an Immersion Blender

Measure the deepest pot you own before you shop. That single check disqualifies more stick blenders than every other criterion put together, and it is the one nobody does. After that: does the bell vent, does the shaft detach, is the speed genuinely variable, what does the warranty document actually say, and only then how many watts.

1. Shaft length, against the pot you actually own

A stick blender works submerged. If the shaft is too short for your stockpot, you either blend in batches in a smaller vessel — which defeats the point of owning one — or you tilt the pot and put your knuckles where the steam is. That second option is how people get burned, and it is entirely a purchasing mistake rather than a technique one.

Take a tape measure to the pot you make soup in, from the base to the rim. You want the blending head fully covered with the motor housing still comfortably clear of the rim. Manufacturers are inconsistent about publishing shaft length, so where it is not stated, treat that as a reason to prefer a model where it is.

2. Whether the bell vents

The bell is the guard around the blade. Push a flat-rimmed bell against the base of a pan and it forms a seal: the blade spins, nothing circulates, and the machine tries to lift the pan. This is the single most irritating failure mode in the category and it is a design problem, not a power one.

Some makers engineer it out. Breville’s Control Grip has a vented bell designed specifically to stop suction lock, and it is the clearest example of a manufacturer fixing the thing owners actually complain about. Where a maker does not mention it, look at the bell shape in the product photography: relief cut into the rim is what you want.

3. Whether the shaft detaches, and what it is made of

The motor housing must never go in water. If the blending shaft detaches, you can rinse or dishwasher the part that touched food and keep the electrical part dry, which is both safer and faster. A one-piece stick means wiping around a live component over a sink, forever.

Metal shafts tolerate heat and staining better than plastic. Turmeric, tomato and curry will mark a plastic shaft permanently; stainless steel will not. All-Clad’s all-metal construction is the argument in its favour, and it is a real one for anyone who cooks with colour.

4. Variable speed, and where the control sits

A stick blender is held over a hot pan with one hand. The speed control should therefore fall under the hand already holding it — not on the far side of the body, not requiring a second hand. Braun’s MultiQuick 7 responds to grip pressure, so you modulate mid-blend without reaching for anything. Breville puts a trigger and a dial under the same hand.

Genuinely variable beats a set of steps, for the same reason it does on a countertop machine: you want to start slow so hot liquid does not climb the pan, then bring it up. A turbo button is useful as an override, not as a substitute.

5. What the warranty document says — not the product page

This is where the biggest differences hide, and they are much larger than the differences in performance. Across the three machines we track, cover ranges from one year to three for broadly comparable tools at broadly comparable prices.

Two traps worth knowing. Braun’s printed manual guarantee is marked “For UK Only” at two years while the US term is three, which is confusing on the box — the US figure comes from Braun’s own knowledge base. And All-Clad’s warranty applies only to purchases from authorised sellers, so a marketplace bargain may be an uncovered machine. We tabulate the whole category in blender warranties compared.

6. Wattage, last

The three machines above span 280 to 600 published watts, and every one of them purées soup without complaint, because cooked vegetables in stock are an easy load. Wattage starts to matter only at the dense end — a pan of root vegetables with little liquid, where 600 W does show an advantage over 280.

What wattage will never buy you is capability a stick blender does not have. No hand blender crushes ice, makes nut butter, or blends a frozen load, whatever number is on the box. If that is what you need, you are shopping in the countertop hub, not this one. Note also that brands publish this figure inconsistently: Braun states input power, which is what the motor actually draws, while others give a bare number with no qualifier. The full explanation is in blender wattage explained.

What the attachments are actually for

The chopper bowl is a small food processor and the most useful thing in the box: onions, herbs, nuts, breadcrumbs. It is wide and low, which is the geometry chopping needs and the geometry a blender jar cannot have. Fuller explanation in immersion blender attachments explained.

The whisk handles cream, egg whites and lump-free sauces. It is the attachment most people never fit and then discover they wanted.

The beakeris a tall, narrow vessel that keeps splatter in and forces ingredients back onto the blade. For mayonnaise and vinaigrette it is not optional — the emulsion depends on the narrow column.

Where to go next

If soup is the main job, the soup ranking applies these checks directly. If you also want chopping, see immersion blenders with a chopper. And if you are not yet sure a stick blender is the right form factor at all, blender vs immersion blender settles it in a table.