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Only coffee lovers know what a sip of hot coffee means in the early morning or after a tiring day. We often face difficulties making our coffee again and again if you are having a busy day already. Therefore, over the years many new products have come into the market for coffee addicts starting from coffee brewing machines to coffee mugs. Now, we would like to enlighten you with which type of cup keeps coffee the hottest for the longest, that you don’t need to make your hot mug of coffee every time. So, let us have a look at what type of cup keeps your coffee hot and what are things which you must know.

Key Features

  • You will want to look for two key features when selecting a mug that will keep your coffee hot all throughout the day. The next thing which you need to make sure of is the vacuum-insulation technology that is featured in your coffee cup.
  • This simply ensures that the air is removed between your cup’s metal layers so that your coffee does not pass heat to the cooler air that surrounds it. The other main characteristics that have to do with is your mug’s lid.
  • Ideally, you would like an automatic lid-locking mechanism that, at the touch of a button can close between sips when you want. Not only will your coffee be easy to drink on the go with this style but it will remain hotter for longer as well.
  • To prolong the steaming hot temperature, there is also something you can do on your own that is rinsing. You can rinse your coffee mug quickly in hot water before pouring the coffee. This will heat the entire bottle and prevent too much heat from being transferred to the coffee, thereby cooling the coffee down.
which type of cup is best at keeping liquids hot

Materials

  • If want to know which type of cup keeps coffee the hottest for the longest: plastic, paper, glass, or Styrofoam? Then the right answer would be Styrofoam as far as holding the temperature reliably hot is concerned the Styrofoam cup is the one. It is capable to hold the liquid hot for the longest time possible.
  • The most popular materials used in containers containing hot beverages are paper, glass, plastic, and Styrofoam. So, if you ask me which one keeps the coffee warm the least? Then my answer to that would be a glass container. The container made of glass is the least effective for holding a cup of coffee warm, despite containers of the same or equal sizes.

Experiment

  • Over the years different mugs were seen in the market of different sizes and shapes. Among the recent ones, classic ceramic, tin, and stainless steel made mugs were also noticed in the hands of the customers. 
  • Therefore, if you want to know which type of cup keeps coffee the hottest for the longest and shortest? Then you need to run a simple experiment. Now, we have already done an experiment for you where every mug was filled with 212 degrees boiling water and then waited for half an hour to see how much time the water took to become cool.
  • In terms of keeping the water warm, most of us trusted that a ceramic mug will be able to keep the water warm for the longest. However, in just half an hour the water within the ceramic mug fell by more than 100 degrees.
  • Surprisingly, the stainless steel mugs were able to keep water warm for the longest. The second one was the plastic mugs, the glass mugs were the third one, the ceramic mugs made into the fourth position, and then Styrofoam, paper and the last one being the tin mugs. 
  • So, the stainless steel mug was a clear winner here and the tin mug was the worst at keeping the liquid warm.

Best & Worst Insulator

  • The next thing which you need to know is the material of the insulator of your coffee mug. Overall cotton and plastic are the best insulators to keep the water or any liquid hot, while aluminum foil and bubble wrap were the worst insulators to keep the liquid warm.
  • Therefore, if you ask me which insulator acts as the best and which insulator acts as the worst? Then my answer would be, the best insulator is proved to be cotton, while bubble wrap is considered as the worst insulator.
  • As a matter of fact, all thermal mugs either keep your beverage hot, or cold. This is the basic successful design of such mugs. Protected travel mugs are double-walled. Between the walls of the insulation, there is a vacuum on the grounds that the air is sucked out.
  • This gives the protection, which guarantees no warmth is lost to the outside. No warmth can get to your beverage from an external environment. Perhaps, this is why they are known as vacuum travel mugs.

There are certain things that you should know if you have purchased a thermal mug to keep your coffee hot.

  • There are different kinds of thermal travel mugs available in the market and I believe, you see which material your travel mug is made of. If your travel mug is made of stainless steel like most travel mugs then sadly, we do not suggest you place your stainless steel travel mug in the microwave. 
  • The stainless steel will block your coffee from heating up and your microwave can even be harmed. One will try to heat up your coffee and the other one will try to retain the heat in the mug and as a result, either one or both can be destroyed. Simply, stainless steel and microwave do not get along with one another.
  • Travel mugs are amazing and there are not just used for traveling purpose only. As long as you do not open the lid too often, a good double-walled thermos will keep your coffee hot for up to nine hours, provided that your mug has good insulation power.

How to Keep Your Coffee Hot for Long

  • Now there are many ways of keeping your coffee warm for a long which you can do additionally. The first thing to do is to make sure that the vacuum flask is running properly and that it does not leak from anywhere. Secondly, using a fabric, towel, scarf, or something, you can cover the coffee mug so that it stays warm for the longest time.
  • Another way of adding insulation is by covering the coffee cup then preheat it if you are drinking your coffee from a normal home or coffee mug. This will stop your coffee from getting cold on you earlier than you expected
  • If you are looking forward to buying a thermal mug for you and your family then do your research first. Before buying anything blindly, find details about the best thermal coffee mugs. Here, we will give an overview of the things which you need to know about the best travel mugs.
travel mug that keeps coffee hot the longest

Things to Consider Before Buying

  • The best travel mugs have the best leak-proof lid for sealing. You must need to know that if you have to pack it in your pocket then it should not spill and ruin your things.
  • Select a mug that has stable seals. Any rubber seals will add their ugly taste to your coffee.
  • Choose a brand name that is well-known. The travel mug with the most ratings is considered to be good in most cases.
  • The cleaning process of your mug should be quick, easy, and hassle-free. As no one wants to have a filthy mug of coffee or go through much trouble while washing it.
  • When you are driving or traveling somewhere, it should be easy to use.
  • The cup holders in your car or chair should be able to fit your travel mug easily. Mostly it becomes very inconvenient if you get a very giant mug that does not fit your cup holder or anywhere else. Therefore, standard size with decent capacity is always recommended as travel mugs as it is easier to carry.
  • Purchase the mug which suits your style and taste. Travel coffee mugs, ceramic coffee mugs, and plastic coffee mugs are made of stainless steel mostly. Therefore, find a thermal travel mug that will not carry the last drink’s taste, stain, or smell. It must be thoroughly cleaned and your mug should it to do so.
  • While considering so many things before buying a thermal coffee mug, don’t think too much about the price. First of all, you need to keep this in mind that it is a travel mug so it is made to withstand the rigors of travel and all these make it a little pricey.
  • Secondly, it is going to be completely leak-proof and third, it is going to last you really long. Therefore, it is like a long-term investment because I believe it is easier to pay more and get more features than to pay less get fewer features.
  •  As long as possible, it must maintain heat in the mug. That is why it is called a coffee travel mug. You must keep this in mind that even though your drink may be hot when you drink it hours after you leave home, but the coffee in your travel mug should be at a temperature that is drinkable as a hot beverage.

After knowing all these facts now let us talk about different coffee cups and which type of cup keeps coffee the hottest for the longest.

Vacuum Insulated Tumblers

  • The tumblers or bottles with double-walled vacuum insulation are the best to hold coffee the hottest for the longest among many others. They function by having both an internal and external wall made of stainless steel.
  •  They suck out all the air between these walls, forming a vacuum. Heat fails to move through a vacuum and so the heat will remain inside your coffee. They are not perfect and will cool down eventually, but they prefer to keep drinks hot from around 6-12 hours which is fairly enough to go for a day.

Styrofoam

  • Styrofoam is undoubtedly an expensive type of plastic that contains millions and millions of small air bubbles, making it a great insulator and good for keeping your coffee warm. On the other hand, research was done on whether or not you can get Styrofoam cancer or not was carried the result was not favorable.
  • Styrofoam leeches the chemical which is likely carcinogenic that is cancer-producing. So, while it keeps your coffee hot at an affordable price but your overall cost may increase if you consider the risk of cancer. Therefore, I would not highly recommend anyone to buy this type of coffee cup.

Plastic

  • Small plastic takeaway cups are often used for iced coffee, but for hot coffee, they should not be used, and let me tell you why. The hot temperatures of the coffee will allow hazardous chemicals to leech in your drink even if the plastic is BPA-free.
  • Also, some plastics are unable to handle the hot coffee temperatures at all and will begin to melt as soon as you pour your drink. As a result, it can cause another type of hazardous situation and most plastic cups can keep the coffee warm for around 60 minutes highest.

Ceramic

  • Glass is somewhat more insulating than ceramic mugs, but the difference is so small that both are practically identical in terms of keeping the coffee warm. These types of coffee cups do not keep the coffee warm for a long period of time.
  • As long as we drink our coffee quickly when using these cups then generally speaking it is not a major deal. However, it’s a great idea to preheat your glass or ceramic cups before pouring your coffee into it if you want it to last as long as 30 minutes.
which type of cup keeps coffee the hottest for the longest

Stainless Steel

  • Stainless steel, aluminum, and other metals are far worse at keeping your coffee warm for a long period of time than ceramic glass as right through them, the heat moves and flows. However, the stainless steel cups are usually robust and long-lasting, they are great when you are camping, but they are not great at keeping coffee hot.
  • Your coffee will stay warm for at least 15 minutes without a lid. On the other hand, many coffee cups are made with stainless steel with vacuum insulation with a lid attached, and they can work for as long as 6-12 hours depending on the quality of your mug.

Paper

  • Interestingly, the paper is actually better than ceramic or glass and often even better than plastic if it is thick enough. This can work as an effective insulator and cup which can be seen in many places.
  • In general, this is what you can get your coffee if you get a coffee takeaway from your nearest coffee shop. Another benefit of using this type of cups is that it is environmentally-friendly as you can decompose it easily and it is easy to carry anywhere. On the downside, you can expect these paper cups to keep your coffee warm for more than 60 minutes maximum.

Glass

  • Interestingly, the paper is actually better than ceramic or glass and often even better than plastic if it is thick enough. This can work as an effective insulator and cup which can be seen in many places.
  • In general, this is what you can get your coffee if you get a coffee takeaway from your nearest coffee shop. Another benefit of using this type of cups is that it is environmentally-friendly as you can decompose it easily and it is easy to carry anywhere. On the downside, you can expect these paper cups to keep your coffee warm for more than 60 minutes maximum.

Battery-driven

  • There are cups that run a heating element off of battery power that will hold your coffee for a long time at the exact correct temperature and these are known as battery-driven thermal coffee mugs.
  • All you need to do is, add hot coffee to the cup and then set the temperature and the cup will hold the coffee at your desired temperature. As long as the battery lasts, your coffee will be at its perfect temperature.

Final Words

By now, you must be aware of which type of cup keeps coffee the hottest for the longest. When you are going to buy your coffee cup then it is not necessary that you will have to buy the one which we have suggested to you. Our job is to give you all the details about the different types of coffee and how they work. Our choice doesn’t need to match your choice and need so, look for the one which matches closest to your demand. Now, the decision is yours so, have a look at each of them extensively and make a proper judgment for yourself.

As an Amazon & Walmart Associate, I earn from qualifying purchases.