For a single mug microwaves are quicker in America. Potentially even for 2 mugs.
BUT in America kitchen appliances have a power limit (usually) of 1,500W. This is usually higher than a standard microwave (1,000W). And since an electric kettle in America is just a heat source in water, it's very efficient. So if you're regularly heating multiple mugs worth of water, or just boiling water for cooking often, an electric kettle is definitely better. They are also pretty cheap.
Now in Europe and the UK, electric kettles are faster since they can often be around 3,000W or higher. But that doesn't mean American kettles are useless. American kettles a way faster than heating water on the stove. And WAAAY faster than heating water on a gas stove.
I love my electric kettle. I can get 5 cups of boiling water in about five minutes (less for less water).
And while a microwave is likely faster, it also heats the container. For a quick, single mug, it's not an issue. Run that thing for five to heat a lot of water, and the container itself could be scorching hot.
It would burn your food. Microwaves heat the outermost layer that contains water. That heat conducts inwards. It's the same reason you don't bake everything at 500F.
They absolutely do. Many microwaves in the UK are about half the power of built in American microwaves. (Portable/countertop microwaves are extremely common, being around 700-800W usually)
Kettle is much more convenient. Microwave is overkill, while a kettle is both a simpler machine and turns itself off when the water boils with no guesswork. It's ergonomically designed for pouring into a cup.
The speed argument is irrelevant, they're both quick enough.
American kettles are significantly worse than British kettles. They run at lower voltage and lower amperage, so they take much longer to boil water.
Given the choice between using a multipurpose microwave to do one more thing, and buying a separate appliance that is no faster, choosing to use the device you already own is entirely appropriate.
There’s also the whole “kettles in America take longer to heat up, because America only has 120v electrical outlets while the UK has 240v, and therefore gets twice as much power for the same amperage” thing. That being said, I’m in America and I love my kettle. You just expect it to take 5-7 minutes to heat up, instead of 2-3. If I only want a single cup of something, then yeah I’ll use the microwave. But if I’m going to be making more than one cup, the kettle is my go-to.
No judgement from me towards anyone who uses a microwave like this. But that's not a good argument. If you want to get pedantic, the one-time inconvenience of going to the store will be made up for by the hundreds of small conveniences of using it later.
In general I don't think it's fair to think about the inconvenience of buying a thing. Even online reviews, which often complain about shipping times which has nothing to do with the product, don't really complain about the inconvenience of having to buy or order something. It's not relevant.
The microwave is more efficient because you can do all the steps at once. Put teabag in mug, cover with water, microwave, leave and let steep. And if you forget about your tea it's already in the microwave -- just push the "add 30 seconds" button.
I keep my Splenda and non-dairy creamer next to the microwave for added convenience.
No my point is, as a British person that uses the kettle A LOT we went out and bought one that heats up a single cup at a time, which is quicker than boiling a whole kettle.
I fill it up like a kettle and it has a little chamber underneath that it fills and heats, then the boiling water comes out of a spout into the cup.
After owning this type of kettle for over a decade I don't think I can go back to a conventional kettle.
They use different methods of putting heat into water.
A microwave turns the electricity into RF radiation that is absorbed by the water. To produce that radiation, the input electricity is converted to thousands of volts by a DC power supply. So regardless of whether it's 120 or 230 input voltage, it all gets converted to the same high voltage DC to run the magnetron.
A classic electric kettle works by running the current from the outlet through a resistive heating element. Double voltage means double heat.
Induction heaters use a power supply to reduce the input voltage while increasing amps and frequency to heat metal through inductance. So, similar to a microwave, the voltage of the outlet is largely irrelevant.
Tl;Dr: microwaves and induction heaters change the supplied voltage to function, so they work the same in UK and US; resistive heaters work faster on 230v like the UK uses.
Because resistive heating is inefficient. You need to pump a lot of power through to get a lot of heat. A microwave does not use resistive heating and works on a completely different principle and therefore the amount of power available is much less importance.
I had a coworker who watched some idiotic video where someone showed "proof" that microwaved water kills plants. I never saw that video so I imagined they poured the boiling water onto the plants. He was adamant that it was true. "I know what I saw", blabla.
Well, microwaves can affect your food. Though only a handful (of hundreds) of antioxidans in berries, same as if you leave them a few days in the fridge. But no issues with water.
There are very good reasons not to microwave tea, first of all:
I usually find microwaving anything in a mug adds some unpleasant flavour from the mug. Using glass eliminates this, but worth noting.
Microwaving the tea itself will break down some compounds and release more tannins, your tea will be worse.
But even if you're just microwaving the water, the kettle wins (depending on what tea you are brewing). Black tea should be brewed as close as possible to 100°C - when you have a kettle you should pour it just as it comes off the boil, around 90-95°C. By that point the water has actually been boiling for quite a while (at least the water around the element), allowing the rest of it to heat up. It's very difficult to achieve this in a microwave, and dangerous too since you can just end up spraying boiling water around your microwave.
Wouldn’t the microwave lose more “waves” that don’t hit the mug?
Don't the microwaves keep reflecting off of the inside of the microwaves until they hit a water molecule? If they didn't, the inside of the microwave would heat up along with the water.
I tested my microwave with various volumes of water, took temperature readings, and developed a mental model. 450ml of water takes 5:45s to get to 193±1°F.
I just got an induction and everything is so fast BUT for boiling water. It's weird, it's seems to take way too long. I'm not in America though, if it's a question of power not speaking American....
Use a different pot. I have a small 2.5L "induction ready" pot that takes significantly longer than my stainless steel 11L to boil, because the former has a steel plate between layers of aluminium, and the latter is fully steel.
I do not say it is chemically different. I'm saying the tee does not taste the same!
You cannot reduce the whole gustative experience to simply chemically composition but there IS something different.
Maybe not if I'm among tester.
I take feel the difference between microwave and other heating method not just in tea. I know people you feel the difference between gaz and electricity even though I don't.
This is tea, justice and the American waaay. This is why American main battle tanks are not built with interior accomodation for making tea, but British Challengers are.
I don't think anybody seriously thinks that hot H2O can have a different formulation. What, are we postulating the existence of isotopes for molecules now?
I have never seen a thread that is more dangerous to the Special Relationship and I am here. for. it. Brits just sat down to their post-dinner cup of tea and the Muricans just got up from lunch, just raging at each other. Move the nuclear clock one second closer to midnight, please.
I've microwaved water and there is always this foam at the top. Furthermore I think the kettle takes away some of the Particles since mine always has timescales after a few days.
Using a kettle is not just a British thing, it is always a good idea to boil water, let it cool down and then drink, I recently read that it also reduces micro plastics by at least %70