Lukewarm-Brewing Coffee/コーヒーのぬるま湯抽出

Japanese Coffee Japanese Food
I wanted to know what it would be like to brew coffee with lukewarm water rather than hot or cold water. I searched for an answer on the Internet, but in vain. So, I made an experiment.
20 g coarsely ground coffee, in the tea strainer that I used previously
粗挽きのコーヒー20 gを、前に使った茶こしに入れました。

I poured a small amount of hot water from the thermos for blooming.

The water was 80-85 degrees C (176-185 degrees F).

I put on the lid and let it sit for 3 minutes (not 30 seconds).

Then, I poured slightly less than 300 ml water at 41 degrees C (106 degrees F).
次に、摂氏41度(華氏106度)のお湯を300 mlよりちょっと少なく入れました。

I tried to refrain from stirring the coffee grounds as much as possible, like I usually do.

I let it sit for another 3 minutes, with the lid on.

I was surprised to see that the resulting coffee was at 42/108 degrees C/F. My insulated mug retains heat very well!

I transferred to coffee to another mug, leaving the dregs in the initial mug.

I heated the 300-ml coffee in the 800-W microwave for 1 minute. It was now 69/156 degrees C/F.
300 mlのコーヒーを800 Wの電子レンジで1分加熱しました。摂氏/華氏69/156度になりました。

Not bad! In fact, it was much better than I had anticipated. I couldn’t tell it from coffee brewed at a higher temperature.

Dregs left in the second mug

To be continued.

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