Knowing how to store foods correctly may seem simple, but if you're not careful, you could end up with clumpy sugar, prematurely mouldy fruit and mayonnaise that's in danger of separating. So, to help you save money, cut down on waste and, most importantly, ensure your ingredients stay fresh and tasty for as long as possible, we've compiled a list of foods most people tend to store wrong – with advice on what to do instead.

Click or scroll through our gallery to discover 33 foods you never realised you'd been storing incorrectly – counting down to the most common mistake of all.

We've based our ranking on how common each mistake is, taking into account expert advice, research and the experience of our team. This list is unavoidably subjective.