Buying guide
Slow Cookers: What Size and Which Features?
Choosing a slow cooker by household size, the features worth paying for, and the food safety rules to know.
A slow cooker turns cheap, tough cuts into tender stews while you are out. Many British one-pot dishes, from Irish stew to Dublin coddle, suit it well.
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Size
| Capacity | Feeds |
|---|---|
| 1.5–3 litres | 1–2 people |
| 3.5–5 litres | 3–4 people |
| 6 litres or more | 5+, batch cooking or a whole chicken |
Slow cookers work best between half and two-thirds full, so do not buy one much bigger than you need.
Features worth having
- Low, high and keep-warm settings.
- A timer that switches to keep-warm at the end.
- A hob-safe insert for browning meat in the same pot (check the listing).
- A dishwasher-safe pot and lid.
Food safety
- Thaw frozen meat fully before slow cooking.
- Never slow cook raw red kidney beans. The Food Standards Agency warns it does not destroy their natural toxin and can make it worse. Use canned beans, or soak and boil dried ones fully on the hob first.
- Do not lift the lid often; each time adds cooking time.
Adapting recipes
Use less liquid than in a hob or oven recipe, since little evaporates. Stovies and stews adapt easily.
Frequently asked questions
Can I put dried red kidney beans straight into a slow cooker?
No. The Food Standards Agency says raw red kidney beans should not be slow cooked, as it does not destroy their natural toxin and may increase it. Use canned beans, which are already cooked.
Can I put frozen meat in a slow cooker?
Thaw it fully in the fridge first, so the food heats through quickly enough.
Do I need to brown meat first?
It is not essential, but browning adds flavour and colour. A hob-safe insert lets you do it in the same pot.
Sources
- Home food fact checker, Food Standards Agency (GOV.UK), 21 August 2026. Checked 1 October 2026.
- Advice on eating legumes, Food Safety Authority of Ireland. Checked 1 October 2026.
How we choose
BeneRecipes compares tools using manufacturer specifications and retailer listings. We have not tested these products ourselves and don't publish star ratings. We explain which type suits which cook and why.
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Recipes to go with it
Recipe · 2 hr 20 min
Irish Stew
Lamb, potatoes and onions simmered slowly until tender: the plain, comforting stew of the Irish home kitchen.
Recipe · 1 hr 10 min
Stovies
Potatoes and onions slowly "stoved" in dripping with leftover roast meat: Scotland's great thrifty supper.
Recipe · 2 hr 30 min
Dublin Coddle
Sausages, bacon, onions and potatoes cooked slowly in stock: a warming one-pot supper from old Dublin.