Why is there a shiny side on aluminum foil?

“Where the foil is in contact with another layer, that's the 'dull' side,” Reynold's explains. “The 'shiny' side is the side milled without being in contact with another sheet of metal. The performance of the foil is the same, whichever side you use.”
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Which side of the aluminum foil should touch the food?

According to Reynold's Kitchen, the difference in appearance between the two sides of aluminum foil is simply a result of manufacturing and serves no real purpose. Meaning, whether you are cooking your food with the shiny side up or the dull side up, you're doing it right.
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Does the shiny side of aluminum foil matter?

Most people think it matters whether aluminum foil is used shiny side up or down, but the surprising truth is that it doesn't make a difference. The variation is a result of the manufacturing process—the shiny side comes in contact with highly polished steel rollers, and the matte side doesn't.
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Why aluminum foil has a shiny and a dull side?

The side coming in contact with the mill's highly polished steel rollers becomes shiny. The other side, not coming in contact with the heavy rollers, comes out with a dull or matte finish." So, there you have it — one side gets a little extra buffing and comes out shining like a sheet of silver!
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Which side of aluminum foil is toxic?

As it turns out, it really does not matter which side of the aluminum foil you use. "Regardless of the side, both sides do the same job cooking, freezing and storing food," Mike Mazza, marketing director for Reynolds Wrap explained to TODAY. The only time it does matter is if you specifically buy non-stick foil.
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Why is Aluminum Foil Shiny on One Side But Not the Other?



Which side of aluminum foil should be on the outside?

Aluminum foil has a shiny side and a dull side. Many people believe that it matters which side is used up or down. The truth is that it makes no difference at all. The reason the two sides look different is due to the manufacturing process.
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What is the purpose of putting foil on door knobs?

Wrap door handles, knobs and drawer pulls in foil to protect them from splashes and spots.
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Which side of the aluminum foil do I use for baked potatoes?

In fact, some cooks wrap potatoes in aluminum foil dull side facing out during baking with the belief that the shiny side reflects heat toward the potato, cooking it faster. This is just not so. When baking potatoes, the aluminum foil performs the same -- shiny side facing in or out.
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Which side of the aluminum foil should touch the food Reddit?

TIL- It makes no difference which side of the aluminum foil you use, both sides do the same fine job of cooking, freezing and storing food. The difference in appearance between dull and shiny is due to the foil manufacturing process.
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Is aluminum foil toxic when heated?

No effects in healthy adults, research shows

While it is true that some aluminum gets into food when cooked in aluminum foil or with aluminum cookware, and that this is enhanced in acidic foods, it is not true this causes any health effects in healthy adults.
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Should baked potatoes be wrapped in foil?

Prick potatoes with a fork before baking to shorten the baking time and to keep them from bursting. Bake at 400° F for about one hour, or until tender. Do not wrap potatoes in aluminum foil for baking. Foil holds in moisture and steams the potatoes, resulting in a "boiled" taste and texture.
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Is it OK to grill on aluminum foil?

This is a major NO-NO. Laying the foil on the grates can restrict the intended air flow inside the grill, which could lead to damage of the internal components, not to mention create a dangerous situation.
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Why is wrapping your feet in Aluminium foil good?

Aluminum Foil Use #1: Eases Muscle Pain

Wrapping foil around any sore muscles can help relieve the pain. Gently rolling foil around the sore area then fasten it to make sure it stays in place. Keep it on for eight to 12 hours and repeat the process for 10 to 12 days before taking a break for a week.
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Is it safe to cook with aluminum foil in the oven?

Aluminum foil is a thinly rolled sheet of aluminum that's claimed its place as a common kitchen staple. Not only is it safe to cook with aluminum foil in the oven, but cooking with aluminum foil can help transmit heat readily and make cleanup easier.
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What part of the aluminum foil goes up?

The shiny side is face-up on the roll, and the dull side is on its underside. In other words, feel free to use whatever side makes you happy. But, if you are using non-stick foil, there is a difference between the two sides because the non-stick coating is only applied to one side.
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What happens to aluminum foil in the microwave?

The FDA reiterates that food completely covered in aluminum foil should not be put in the microwave here . The electric fields in microwaves cause charges to flow through metal. Thin pieces of metal like aluminum foil are overwhelmed by these currents, causing them to heat up so quickly that they can ignite.
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When was tin foil discontinued?

1940: When It Comes To Cooking

After 1940, tin foil was replaced by aluminum foil and is widely known as a kitchen tool then.
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Why do people put foil on their windows?

What's the purpose of covering windows with tin foil? ​To Stay Cool:​ The most common reason people line their windows with tin foil is to keep their house protected from the sun's rays — and the radiant heat associated with them.
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Does wrapping your phone in aluminum foil?

Sadly, it doesn't work. While wrapping the phone in foil would almost certainly create some degree of interference, it likely wouldn't be enough to prevent the phone sending and receiving signals.
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Why do hockey players put foil on their knuckles?

Puttin' on the foil: It's great that a line from a movie about hockey has been added to the hockey vernacular. When the Hanson Brothers were getting ready for a game in "Slap Shot," they were seen putting foil under their gloves to help them cut their opponents during fights.
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Should I poke holes in potatoes before baking?

"Yes, it's good to prick them," Smith told Food52. "It pokes holes in the skin, which allows steam to escape. Otherwise, they could explode—it doesn't happen all the time, but it happens every once in a while. The potato is full of water it's trying to turn to steam, or water vapor.
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Why you shouldn't cook potatoes in foil?

Foil wraps will not decrease baking time, but will result in a soggy potato interior with wet skin. Wrapping a baked potato in foil after it has been baked will allow you to hold up to 45 minutes, but the best method for holding a baked potato is in a bread warming drawer.
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