A refrigerator (often called a "fridge" for short) is a cooling appliance comprising a thermally insulated compartment and a heat pump - a mechanism to transfer heat from it to the external environment, cooling the contents to a temperature below ambient. Refrigerators are extensively used to store foods which deteriorate at ambient temperatures; spoilage from bacterial growth and other processes is much slower at low temperatures. A device described as a "refrigerator" maintains a temperature a few degrees above the freezing point of water; a similar device which maintains a temperature below the freezing point of water is called a "freezer". The refrigerator is a relatively modern invention among kitchen appliances. It replaced the icebox, which had been a common household appliance for almost a century and a half beforehand. For this reason, a refrigerator is sometimes referred to as an "icebox". Freezers keep their contents frozen. They are used both in households and for commercial use. Most freezers operate around minus 18 °C (0 °F). Domestic freezers can be included as a compartment in a refrigerator, sharing the same mechanism or with a separate mechanism, or they can be standalone units. Domestic freezers are generally upright units, resembling refrigerators, or chests, resembling upright units laid on their backs. Many modern freezers come with an icemaker.
Things you don't need to store in a fridge
Follow the supermarkets. They will never waste money refrigerating an item if it is not nessecary. If they don't refrigerate a product, then it doesn't need to be stored that way.
The following items don't need to be stored in a refrigerator. In most cases it's just plain unnecessary and others it makes the item unpalatable. You are probably using up valuable fridge space and also wasting valuable energy.
- The excess cold breaks down the starch making them sweet and gritty.
- Best stored in a dark cool place so light does not promote growth of shoots from the eyes. A bowl on a counter-top, covered with a tea-towel works fine.
- They dislike the humidity in a fridge and will go soggy and mushy from the inside - out.
- A cool, dark and dry ventilated container is the best place for onions.
- The same story as for onions. Once the bulb has been broken, use the cloves within 2 weeks or they tend to sprout.
- Absolutely no point to storing them in a frige, even though fridge manufacturers still make those 'eggy-shaped-depressions' for storing them.
- A bowl on a worktop is fine, and they look nice too.
- Not sure of the technical reason but they go dull, tasteless and mealy if stored in the fridge.
- Cool and dark is best. If they need ripening then leave them on a window sill until the green turns red.
- Melons, squashes, cucumbers etc. (cucurbits)
- Only store cucurbits in the fridge once they have been cut open.
- Cool and dark is the best place for whole cucurbits.