Tomatoes
Putting tomatoes in the fridge will prevent them from ripening, thus killing their flavour.
Bananas
Ripe bananas can be put in the fridge to keep them ripe, but putting an unripe banana in there will stop it from ripening. According to A Moment of Science, bananas are from warm, tropical climates and have no natural defence against the cold.
Melon
Only store melon in the fridge if it’s been cut. Until then, store it outside. Research has shown that keeping a melon at room temperature preserves the high antioxidant levels.
Onions
The National Onion Association says that the only time onions should be kept in a fridge is if you’re trying to extend their shelf life. Otherwise, keep it in a cool, dry place.
Garlic
Putting garlic in a fridge, especially in a plastic bag is an invitation for mould. Best to store it in a cool, dark place that isn’t the fridge.
Potatoes
Keeping potatoes in the fridge can change its starch to sugar. Not only can this change the potato’s texture, but it can also make it taste sweet once cooked.
Bread
Freezing a loaf of bread temporarily stops bread from becoming stale, but refrigerating one can actually speed up the development of mould. The cold temperature causes the starch to crystallise quicker, making bread hard and stale.
Oil
Storing oil in the fridge tends to harden its consistency, and you won’t be able to cook with it.
Coffee
Putting coffee in the fridge will not only get rid of some of its flavour, but it will also absorb the odour in the fridge, meaning it will never taste the same again.
Avocado
Like the banana, keeping the avocado in the fridge, especially if it’s unripe, will stop it from ripening.
Honey
The cold will increase the rate of crystallisation, making it hard and solid.