Soak for about 3-4 hours.?

Black rice is sweet and flat, rich in crude fat, fiber, vitamins, carotene, and calcium, iron, phosphorus and other nutrients, moderate consumption of human health has certain benefits, it is best to soak 3-4 hours or so before cooking, the nutrients inside the soak will be easier to cook some of them.

Expanded information:

Tips for steaming rice

1, try to let the rice "mess": the most effective way to prevent chronic diseases. In cooking rice rice porridge, it is best not to use a single rice, but rice, coarse grains, beans, nuts and so on together with the cooking. For example, red beans and rice, peanut oatmeal rice porridge, etc., is very suitable for chronic patients of rice food.

2, try to make the rice "coarse": favorable control of blood sugar and blood fat. The so-called coarse, is to minimize refined white rice, their blood sugar response is too high, the control of blood glucose and lipids are very unfavorable. Only eat enough fiber to effectively reduce the speed of digestion of rice, at the same time can adsorb cholesterol and fat in the intestinal tract, play a role in reducing postprandial blood glucose and blood lipids.

3, try to make rice "light": favorable control of blood pressure weight. Try not to add fat in the rice, so as not to add extra energy, but also to avoid more elevated blood lipids after meals.

Reference:

Baidu Encyclopedia - Black Rice

People's Daily Online - What to do with rice entrapment?4 tips to steam nutritious and tasty rice