Bikkuri Daki (Surprise Cooking)/びっくり炊き

In response to Amato's question, I did a quick Google search for how to cook brown rice, and I immediately learned about "bikkuri daki". This sounds quite interesting, so I decided to introduce it here in my blog.
First, the introduction to this way of cooking brown rice from the site above:
This way of cooking has been handed down since the Edo period in the Akita district.
This method, "bikkuri daki", enables you to cook brown rice plump and soft just like white rice for relatively a short time.
You can use a normal pot, and you need not soak for a long time.
You can cook brown rice right away when you want to have some.
This method is very easy.
Amatoさんの質問に応えて、玄米の炊き方についてGoogle検索すると、すぐに「びっくり炊き」のことが分かりました。とても興味深いので、このブログで紹介することにしました。
まずは、上記サイトから、この玄米の炊き方の紹介：
この炊き方は秋田地方に江戸時代から伝えられてきた玄米の炊き方です。
この「びっくり炊き」で炊くと、比較的短時間に
ふっくらと柔らかく白米のように炊きあげることができます。
普通の鍋で炊けますし、長時間水に浸す必要もありません。
食べたくなったらすぐ炊けます。
炊き方は非常に簡単です。

Sounds promising, does't it? In the following description, the Japanese text will be omitted.
期待できそうです。以降の説明では、日本語は省略します。

1. Get brown rice ready.
When cooked, 1 go (= 180 ml or cc) of rice will be equivalent to nearly 2 bowls (o-chawan) for adults.

2. Wash with water lightly.
You don't have to soak for a long time.

3. You can use a normal pot like an enameled or stainless steel one.
A donabe is used here.
Add 1.2 to 1.5 times as much water as rice.
The older the rice, the more water.

4. Put on the lid, and heat on high heat.
If water boils over, lower the heat.

5. In about 15-20 min., the water will be reduced, giving off aroma.
If you are worried about whether the rice is scorched, you can take off the lid from time to time to check it.

6. When you hear sizzling sound, take off the lid, and add cold water.
The amount of water should be 0.8 to 1.2 times the rice.
"Bikkuri daki" is so called because you add bikkuri mizu (surprise water).
If you want to cook your rice soft, add more, and if you want to cook it hard, add less.

7. Stir well, put on the lid, and continue to simmer.

8. In 10 to 15 min., turn the heat to low, and then turn off the heat. (Note: The original Japanese text is vague here as to when to turn off the heat!)

9. Let stand for about 5 min.

10. Take off the lid, and mix well.

Edited to add: The third photo from the bottom of the site linked to above shows all of the 1 go of brown rice cooked with this method, while the second from the bottom shows all of the 1 go of brown rice cooked in a normal way. You can see the considerable difference in amount.