Microwaved cuppa

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Dreamweaver
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Microwaved cuppa

Post by Dreamweaver » 12 Apr 2017, 05:29

Dr Vuong, who works at the University of Newcastle on the New South Wales Central Coast, specialises in finding ways to "add value" to natural products by extracting bioactive compounds with antioxidant capacities.

His 2012 research on extracting compounds in tea has recently garnered much interest across ABC Radio.

The discussion followed online outcry from UK audiences of TV drama Broadchurch last month, when actor David Tennant microwaved his cup of tea.

In Dr Vuong's study though, to extract, isolate and purify the important components of green tea and black tea, he found that the following method activated 80 per cent of the caffeine, theanine and polyphenol compounds, and generated the best taste.
  • Put hot water in the cup with your teabag.
    Heat in the microwave for 30 seconds on half power.
    Let it sit for a minute.
Polyphenols are antioxidants which are linked to good health properties like lowered cardiovascular disease and lower cholesterol, hypertension and diabetes.

http://www.abc.net.au/news/2017-04-11/m ... ew/8433986
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Re: Microwaved cuppa

Post by Perrorist » 12 Apr 2017, 06:31

I've been a long time fan of Madura Earl Grey, which has a low caffeine content, but have recently begun to vary it with a lemon-flavoured green tea I buy from Aldi, that costs only $2.09 for 50 tea bags. Both economical and tasty.

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Re: Microwaved cuppa

Post by Biggdad » 12 Apr 2017, 07:37

My wife has Lipton black leaf & I have Dilmah. Two months ago I stopped drinking Coffee, used to have at
least 4 to 6 cups a day! 8-[
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mavisbramston
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Re: Microwaved cuppa

Post by mavisbramston » 12 Apr 2017, 20:31

Strictly tea for me. Never tea bags though.

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Buck_naked
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Re: Microwaved cuppa

Post by Buck_naked » 12 Apr 2017, 22:23

reading the original post, if you already have hot water why do you need to microwave the cuppa again???
the whole point of the microwave is to heat the water up innit???

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Re: Microwaved cuppa

Post by Dreamweaver » 12 Apr 2017, 22:54

They don't say how hot the water should be, Buck, which I felt was a fault. I think it just means it's not boiling, which scalds the tea. If the aromatic oils are released into the hot water first, then it can continue to heat to the desired temp. Herbal teas are supposed to never need boiling water, so I suppose the same applied to common teas?
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Re: Microwaved cuppa

Post by Perrorist » 13 Apr 2017, 07:03

If my memory serves me right, the water temperature should be 95°C.

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Re: Microwaved cuppa

Post by Buck_naked » 13 Apr 2017, 08:06

speaking of 'green' tea, what is the most energy efficient way of making a cup of tea????
Electric kettle, microwave, or Startrek replicator????

:thinking: :thinking: :thinking:

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Re: Microwaved cuppa

Post by Buck_naked » 13 Apr 2017, 08:45

The guardian readers have crunched the numbers, answer seems to be gas is the most efficient.

https://www.theguardian.com/notesandque ... 52,00.html

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Re: Microwaved cuppa

Post by Dreamweaver » 13 Apr 2017, 10:28

I have a little instant water heater, 2 litres I think. I can instantly heat one spoonful of water if I wish, boiling. It looks like a coffee maker. There are others that will regulate the temperature, and still others that keep the whole contents hot. I found mine on ebay, and it was shipped from Melbourne.
Similar to this -
http://www.ebay.com.au/itm/3L-2kw-Elect ... 1483884742
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mavisbramston
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Re: Microwaved cuppa

Post by mavisbramston » 14 Apr 2017, 21:16

I believe tea must be a rolling boil.

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Re: Microwaved cuppa

Post by Buck_naked » 15 Apr 2017, 07:49

A what boil???.
"A rolling boil (also roiling boil) is when a liquid is boiled rapidly with lots of bubbling. This requires much more energy than simmering, and is often discouraged because it can break up or alter the shape of ingredients, whereas simmering will keep the ingredients whole."

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Re: Microwaved cuppa

Post by Dreamweaver » 15 Apr 2017, 10:59

Mavis, that was always the advice when I was young. But it seems, since experiments with herbal teas, that advice has changed, that a slightly lower temperature does a better job. I truly can't say I notice much difference in the taste, but perhaps it affects the nutrients more than the taste?
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Re: Microwaved cuppa

Post by terra » 15 Apr 2017, 15:03

For a few years now, Breville have tried to sell us this adjustable electric kettle. Frankly, I reckon it's crap ! :character-oldtimer:

Me ? :thinking: ..... I'm not convinced ! Call me old fashioned but I boil my "normal" kettle and pour the water straight into my cup which has one of those stainless steel infusers in it with my preferred dose of tea leaves. Stir the infuser for 15 seconds and take it out of the cup. Perfect result every time.

If you want read the review on the Breville adjustable kettle, here it is:
http://www.thekitchn.com/product-review ... riab-81332

Meanwhile..... let's look at the temp for coffee. :twocents-mytwocents:
The temperature for coffee made in an espresso machine is very low.... just 90 degrees C.
....and for a good reason, if the temp is too high it will produce a bitter cup of coffee. My espresso machine is set at around 87 degrees and it's the perfect temp for me. :wqoohoo


Here's a snippet from a coffee tragics site: http://www.gilkatho.com.au/news/cat/news/post/faqs185
What is the correct temperature for coffee made on an espresso machine?

The optimum temperature for espresso coffee to be made is around 90 deg. C at the time the water first makes contact with the ground coffee

The water will lose some temperature as it flows through the brewer, the tubes and then falls into the cup resulting in a cup temperature of around 70 deg. C for black coffee.
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