Instant rice

Instant rice, also known as minute rice, is rice that has been precooked and dehydrated so that it cooks more rapidly. Regular rice requires 10-15 minutes to cook while instant rice needs anywhere between five and 10 minutes. Because it has already been cooked, all that is necessary to prepare instant rice is to simply re-hydrate it with hot water.

Instant rice is made using several methods. The most common method is similar to the home cooking process. The rice is blanched in hot water, steamed, and rinsed. It is then placed in large ovens for dehydration until the moisture content reaches approximately twelve percent or less.

The basic principle involves increasing moisture of the milled white rice by using steam or water to form cracks or holes in the kernels. The fast cooking properties come from the fact that, when recooked, water can penetrate into the cracked grain much more quickly.

The major advantage of instant rice is the rapid cooking time - some brands can be ready in as little as three minutes.

Currently, several companies, Asian as well as American, have developed brands which only require 90 seconds to cook, much like a cup of instant noodles.

...
Wikipedia