As of: February 16, 2024, 10:25 a.m
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If you wrap the lunch sandwich in aluminum foil, you have two options: matt or smooth side on the outside.
Which one is the right one?
Aluminum foil is an integral part of many German kitchens.
It is used for packing lunch, covering leftover lunch or even baking and grilling.
But if you take a closer look at the everyday household utensil, you'll notice that aluminum foil has two different-looking sides.
One is matt, the other shiny.
Why this is the case and which ones you should use.
How to use aluminum foil: Which side goes in?
First of all: There is no correct side for aluminum foil.
It is true that matt surfaces absorb heat and shiny surfaces reflect heat.
Aluminum foil has two different sides.
The reason for this lies in production.
© Imago
Accordingly, you would have to wrap food that you want to keep warm in the matt side and food that you want to stay cold in the smooth side.
However, the aluminum foil is so thin that you don't notice this minimal temperature difference when eating.
So that the foil doesn't tear: A trick in production makes aluminum foil matt and shiny
However, the thin nature of the aluminum foil is the reason why it looks different from the front and back.
The different sides of the aluminum foil are created during production.
Pain in the ass cling film
Most of us use it, but many still find it super annoying: the cling film.
Once you finally find the beginning of the roll and laboriously unwind a piece, it gets stuck and tangled again.
With a cling film dispenser
(promotional link),
leaving is easy and precise, without annoying sticking together.
Aluminum foil, also known as aluminum foil, is made from pure aluminum and rolled so thin during production that it could easily tear in the machine.
To prevent this, two layers of aluminum foil are placed on top of each other and rolled together.
Each film is only touched by the roller on one side.
This side is sanded and ends up looking smooth and shiny; the other side is the inner one during production, which remains rough and matt because it does not come into direct contact with the roller.
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Aluminum foil in everyday life: when to use it and when to leave it out?
It is well known that the use of aluminum foil is not particularly good for the environment.
However, it can also be unhealthy for the body if used too much or incorrectly, as some foods can absorb aluminum if they are wrapped in it.
For example, cooked ham and salty cheese as well as acidic foods such as applesauce, lemons or tomato paste.
Greasy foods also dissolve the aluminum and allow it to pass into the food.
The European Food Safety Authority (ESFA) recommends not consuming more than one milligram of aluminum per week.
For most people it is more.
Organ, nerve and bone damage can result.
By the way: If you always have problems tearing off aluminum foil, you should pay attention to the depressable tabs at the end of the aluminum foil packaging.
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