What Is Charcoal Coffee and Why Did the Cup Scorch?

What is charcoal coffee in this context? It is not a drink style. Customers reheating Molly Tea's Jasmine Milk Tea in a microwave found the paper cup scorched and the drink blackened, with some nearly starting a fire. The cup sticker already warns against microwave use, so the brand was largely cleared of blame in the discussion.

Hot milk tea cools during delivery even with insulated bags and foil, so reheating is common. The usual method is to tear the sealing film or poke holes, then heat on medium for about a minute or high for about thirty seconds. Most paper takeaway cups cannot go into a microwave, and coffee culture discussions quickly noted that metal and plastic containers carry the same restriction.

As the weather turns colder, hot milk tea tends to cool down during delivery, and many consumers try to reheat it in the microwave themselves

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After temperatures drop, hot milk tea easily cools during delivery, which has become a headache for many consumers. Although merchants use insulated bags, aluminum foil, and other measures to slow the temperature drop, cases where the drink arrives at an unsatisfactory temperature still occur from time to time.

So some customers came up with the idea of heating milk tea in a microwave.

According to experience repeatedly tested by milk tea lovers, after receiving the milk tea, you should first tear off the sealing film or poke several small holes, then put it in the microwave and heat it on medium power for about one minute, or on high power for about thirty seconds, to quickly bring the milk tea back to a suitable temperature.

However, recently, many customers reported mishaps when heating Jasmine Milk Tea drinks, and some even nearly set the microwave on fire. From the photos users posted, the milk tea paper cups taken out of the microwave had obvious scorch marks, and the drinks inside were also burned black.

Originally just wanting to warm up milk tea that had gone cold, they unexpectedly nearly caused a fire. These customers said that when they saw the miserable scene inside the microwave, they felt their vision go dark and were frightened afterward. Some mentioned that they had previously heated milk tea from brands such as Bawang Chaji, Mixue Bingcheng, and Nayuki in the microwave, and none of them had problems.

Now, however, using Jasmine Milk Tea's takeaway cup nearly caused trouble, making consumers wonder whether the paper cup has quality defects.

Faced with these "battle-damaged milk tea cups" that look like charcoal, many onlookers instead sympathized with Jasmine Milk Tea, pointing out that the official cup sticker already has a warm reminder printed on it, yet careless customers still put the cup into the microwave. They joked that the innocent brand taking the blame is even more wronged than Dou E.

In addition, although the microwave is a common and convenient heating tool in daily life, there are many restrictions on its use, such as not being able to heat metal containers, plastic products, and so on.

And most paper takeaway cups used by tea drink brands on the market, if they are not marked "microwave safe," basically cannot be put into a microwave.

According to explanations shared by netizens, paper containers are generally not resistant to high temperatures due to their material, and long heating may very likely cause deformation or even combustion. At the same time, the inner coating of paper cups may release harmful substances at high temperatures, contaminating the drink they hold.

Therefore, although many customers claim that no fire started when they heated milk tea in a microwave, this does not mean the practice is safe and feasible.

As for why Jasmine Milk Tea's takeaway cups frequently cause trouble, some users pointed out that this should be related to the decorative pattern on the cup surface. It is said that metal containers reflect microwaves, which may cause sparks and arcs during heating. The brand's new paper cups are decorated with gold-stamped patterns, and although the metallic substances they contain are small in amount, they will also reflect microwaves when the microwave is working, thereby igniting the paper cup that is not resistant to high temperatures.

Many netizens kindly remind that although some people share online their "clever little trick" of successfully heating milk tea in a microwave, this behavior poses safety hazards and may very likely cause fires, explosions, and other accidents during heating, so do not imitate it with a could-get-lucky mentality.

Image source: Xiaohongshu

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The above content is compiled by CoffeeHunters, a coffee news website.