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How to identify cold spots in your fridge
Gather a notebook and writing utensil.
The main problem with cold spots is that they're invisible, which makes them easy to forget. Having a notebook and writing utensil handy in the kitchen will give you the opportunity to make a log of freezing.

(1). A notebook is great to provide to yourself as well. If you find the coldest spots on your fridge, you may need to make one yourself..
(2). If you don't have one, it's a good idea to have a spare ice cube handy so you can take note. One disadvantage to having two ice cubes in the fridge is that you'll be able to refill the ice you keep in the freezer..
(3). You might find it even easier to remember this if you use a magnetic pen/notepad. This way, when you look at the fridge, you'll be reminded about cold spots..
(4). You can also carry large amounts of paper and pen so that you can write down specific keywords that you need to remember. An ideal notebook is a composition book, in which you write down everyday phrases that are important to you..
(3).