The first thing you need to consider with any slow cooker is its capacity – each will list its bowl size in litres. Bear in mind that this won’t translate to the same amount of food, as you shouldn’t fill slow cookers to the brim. This gap allows your food to bubble and simmer properly. The usable cooking space will be around three-quarters of its bowl size, for example, a five-litre cooker can accommodate around four litres of food.

Slow cookers are also brilliant for less-than-confident cooks, easily creating all those meals that seem a bit scary on the hob. That’s because slow cooking develops the flavours of food for richer, tastier results. It’s not just dinners that slow cookers excel at making either. They make great porridge, granola, stewed apples, bread and butter pudding, fudge and dips. You can use your slow cooker to melt chocolate, as a Bain-marie. How much should I spend on a slow cooker?

Does your slow cooker have good heat distribution? Some can suffer from hot spots that cause drying out in corners or at the base. Uneven heat is something that’s more likely to occur in larger bowls. Functions: additional functions on the slow cooker including browning, reheating, reducing and whether it is hob or oven-safe The Ninja Foodi Multi-Cooker is certainly mighty, but if you like your gadgets it could be a great investment. You can of course just use this multi-cooker as a slow cooker, for which it has a generous 6 litre capacity, but you can also take advantage of the sear setting to brown meat and veggies before slow cooking for a more rich flavour. No liquid escapes from a slow cooker, so when adapting a recipe not specifically written for a slow cooker, reduce any added liquid by a third.

Slow cookers range in size from a compact 1.5 litres to a 6.5-litre bowl, so be sure to choose the right size for the way you intend to cook. As a rough guide, 1.5-3 litres will feed one or two people, 3-5 litres, three or four people and anything over five litres should suit a large family, with six litres or more ideal for batch cooks who like to fill the freezer. Alternatively, a larger cooker is great for those who like to eat what’s leftover for lunch the next day.One of the best things about the Drew and Cole Cleverchef Pro is the app, which comes with a huge range of recipes at the touch of a button. Compared to a lot of multi-cookers the Drew and Cole Cleverchef Pro has an uncomplicated display that's simple to customise. A great choice for those who want a smart multi-cooker. The advantage of this is not leaving all that lovely seared flavour behind in a pan, and it reduces washing-up. Finally, look for a slow cooker with a transparent lid, so you can keep an eye on your food’s progress. Lifting the lid of a slow cooker while it’s in use lets out heat and steam, prolonging cooking time. It’s always best to be able to see what’s going on without doing so. Are slow cookers easy to clean?