Multicookers had their moment around 2018, then quietly became one of the few “kitchen gadget” categories that genuinely earned its counter space. In a small UK kitchen, a compact multicooker can replace three or four single-purpose appliances: the slow cooker, the pressure cooker, the rice cooker, and (depending on the model) the steamer and yoghurt maker.
The trade-off is the question this guide is built around: how much capacity can you give up before the machine becomes too small to be useful? The compact 3–6L models work brilliantly for one or two people. They start to feel cramped for three. They’re the wrong appliance for batch cooking for a family.
What a multicooker actually replaces
The case for a multicooker in a small kitchen is almost entirely about cupboard space. A 3L slow cooker, a 6L pressure cooker, and a rice cooker take up roughly 40 litres of cupboard volume between them. A compact multicooker takes up 8–12 litres and does all three jobs at a comparable standard.
What it doesn’t replace, despite the marketing: a proper hob-top frying pan (sauté functions on multicookers are limited and slow), a real oven for roasting (the “bake” mode is a curiosity at best), or an air fryer (multicookers with air-fry attachments are larger, louder, and cook less evenly than a dedicated air fryer for the same money — and they’re outside the “compact” remit of this guide).
The honest description: a compact multicooker is a brilliant pressure cooker, a good slow cooker, a passable rice cooker, and a feature list of other modes you’ll use twice and forget about. Buy it for the first three; treat the rest as bonus.
Compact, defined
For this guide, compact means:
- Capacity 3–6L (enough for two people for a meal, or one person with leftovers)
- Footprint roughly 30 × 30cm
- Removable inner pot (for cleaning, and so you can transport food)
- Both pressure-cook and slow-cook functions (otherwise it’s a single-purpose appliance pretending)
Models above 7L are family-format. Models below 3L are a single-portion novelty.
Comparison table
| Model | Capacity | Footprint | Functions | Best for | Price tier |
|---|---|---|---|---|---|
| Instant Pot Duo Mini 3L | 3L | ~28×28cm | 7-in-1 | One person, smallest kitchens | Mid-range |
| Ninja Foodi OL550UK | 6L | ~33×33cm | 11-in-1 with steam crisp | Two people, full feature set | Mid-range |
| Crock-Pot Express 5.6L | 5.6L | ~32×32cm | 12-in-1 | Slow-cook-led usage | Budget |
| Tefal Cook4me Touch | 6L | ~37×31cm | Pressure-led with recipes | Recipe-guided cooking | Mid-range |
Prices change frequently. Check current price on Amazon.
The picks
Smallest sensible — Instant Pot Duo Mini 3L
The Duo Mini is the smallest multicooker that’s still a real multicooker. 3L is genuinely small — enough for two portions of curry, one whole small chicken, or about four cups of rice — but the feature set is the same as the full-size Duo: pressure cook, slow cook, rice, steam, sauté, yoghurt, keep warm.
For a one-person household, this is the right size. You’re never going to cook for eight, you don’t need to, and a 6L pot of stew that produces six portions you’ll eat for a week is the wrong end of the trade-off when you live alone.
The build is identical to the bigger Instant Pot family — same controls, same removable stainless inner pot (which is the right material; the non-stick pots in cheaper rivals scratch within months), same sealing ring (which you should replace yearly).
The interface is dated — chunky LCD, button-driven, not touch — but it works, and the Instant Pot ecosystem of recipes and tutorials is the deepest in the category by a long way. Whatever you want to cook, someone has already worked out the timing.
View Instant Pot Duo Mini 3L options on Amazon
Best all-rounder for two — Ninja Foodi OL550UK
The Ninja Foodi at 6L is the multicooker that does the most things competently. Pressure cook, slow cook, sear, sauté, steam, “steam crisp” (which is what Ninja calls the air-fry-while-pressure-cooking mode), and bake. The steam-crisp mode in particular is the Foodi’s distinctive trick: pressure-cook a piece of meat to tenderness, then crisp the skin without moving it to a different pan.
Two practical caveats. First, the lid for the steam-crisp function is not the pressure lid — it’s a separate hinged lid attached to the unit. This adds height (you need 45cm of clearance under the wall units) and makes the machine larger than the footprint suggests. Second, the steam-crisp mode is good but not better than a dedicated air fryer for things you’d actually air-fry. If you’d primarily use it for crisping the result of a pressure-cook, that’s the genuine use case.
For a couple in a small kitchen who want one machine to handle slow-cooked stews, mid-week pressure-cooked dinners, and the occasional crisped finish on roasts, this is the right answer.
Check Ninja Foodi OL550UK 6L Multicooker price on Amazon
Best on a budget — Crock-Pot Express 5.6L
Crock-Pot invented the modern slow cooker, and the Express series is what happens when they bolt a pressure-cooking function on. The result is a multicooker that’s better at slow cooking than any of its competitors and adequate at everything else.
The slow-cook performance matters: many “multicookers” have a slow-cook mode that runs much hotter than a true slow cooker, which produces stews that are technically cooked but missing the long-low-heat texture that’s the whole point. The Crock-Pot Express runs at the right temperature for proper slow cooking.
Where it falls short: the inner pot is non-stick, not stainless. It will scratch eventually, and you’ll need to replace it (the part is cheap and widely available). The interface is more basic than the Instant Pot’s, and the manual is — honestly — the worst-written instruction document in this guide.
If your usage is 70% slow cooker, 30% pressure cooker, this is the machine. If it’s the other way round, the Instant Pot or the Ninja will serve you better.
See Crock-Pot Express 5.6L Multicooker on Amazon
Best for people who don’t want to think — Tefal Cook4me Touch
The Cook4me is the multicooker for people who don’t want to learn a multicooker. The unit comes pre-loaded with hundreds of recipes; you select one, follow the prompts on the touchscreen, and the machine handles the timings, temperatures, and pressure release for you. There’s a manual mode, but the recipe-guided mode is the reason this machine exists.
For someone who’s intimidated by the “set the right time and pressure for chickpeas” question, the Cook4me removes the question entirely. For someone who already knows their way around a pressure cooker, it’s an unnecessary middle layer.
The footprint is wider than the Foodi or Crock-Pot — 37cm — which puts it on the borderline of “compact” for the purposes of this guide. The build is solid and the interface is the cleanest in the category, but you’re paying for the recipe ecosystem more than for the cooking hardware.
If a friend or family member has a Cook4me and you’ve seen them use it, this is the multicooker for you. If you’re picking blind, the Instant Pot or Ninja are more flexible.
Compare Tefal Cook4me Touch 6L options on Amazon
Buyer checklist
- Measured the unit’s full footprint, including the lid clearance? Pressure-cooker lids open upward and need 30–40cm of headroom.
- Confirmed the inner pot material? Stainless steel ages better than non-stick and is dishwasher-safe.
- Checked the sealing ring is replaceable? It needs to be; rings absorb odours and degrade in 12–18 months.
- Decided pressure-cooker-led or slow-cooker-led usage honestly? This affects which model is right.
- Identified storage between uses? Compact multicookers still don’t fit in most overhead cabinets.
- Got somewhere to release steam? Pressure-cooker steam release vents upward; not under a wall cabinet.
Compatibility with other small-kitchen appliances
The single biggest mistake is buying a multicooker without thinking about what it’s replacing. If you already own a slow cooker you use weekly and a rice cooker you use twice a week, the multicooker has a clear job. If you’re buying one to maybe try slow cooking, you’re paying for a feature you may not use.
Multicookers and air fryers are the two most useful “extra” appliances in a small UK kitchen — both genuinely save oven time and reduce summer kitchen heat — but they don’t substitute for each other. A multicooker doesn’t crisp food the way an air fryer does, and an air fryer can’t pressure-cook. If you can fit only one, the question is which type of cooking you do more of: braised/stewed/slow vs. crisped/roasted/air-fried.
For air fryer choices, see our best air fryer for one or two people guide.
FAQ
Is a multicooker the same as an Instant Pot?
Instant Pot is a brand that makes multicookers; “multicooker” is the generic category. The Instant Pot is the most well-known but not the only option, and increasingly not the best in every category — the Ninja and Tefal models offer features Instant Pot doesn’t, while Crock-Pot is the better slow cooker.
Can I use a multicooker as a deep fryer?
No. The pressure-cooker design isn’t suitable for deep frying, and any “fry” function is shallow sauté at best. If you want to deep-fry occasionally, get a small dedicated deep fryer or use a saucepan; if you want crisp food without deep-frying, get an air fryer.
Are multicookers safe?
Modern multicookers have multiple redundant safety mechanisms — pressure release valves, lid-locking sensors, temperature cutouts. The serious accidents that occasionally make the news involve people defeating the safety systems deliberately or using damaged sealing rings. Replace the sealing ring annually, keep the pressure release valve clean, and don’t open the unit before pressure has fully released.
How long does a multicooker last?
The electronics typically last 5–8 years of regular use. The inner pot lasts 2–4 years if non-stick, longer if stainless. The sealing ring needs annual replacement. The pressure release valve needs cleaning every six months.
Why is the steam release so loud?
Pressure-cooker steam release is genuinely loud — comparable to a kettle whistle — and there’s no way to silence it. Manual quick-release is the loudest; natural release (waiting for pressure to drop on its own) is silent but takes 10–20 minutes. Plan around this if you live in a flat with thin walls, especially for late evening meals.
Where to start
For one person in a small kitchen: Instant Pot Duo Mini 3L.
For a couple wanting one machine that does most things: Ninja Foodi OL550UK.
For slow-cooker-led households: Crock-Pot Express 5.6L.
For people who want guided cooking: Tefal Cook4me Touch.