5 minutes or so.
Blanched beans about five minutes can be, blanching time is too long will make the beans hard to lose its own taste, and the color is not good.
When we do the beans whether it is shredded or cut section should be blanched, because the beans themselves which contains toxic substances, the role of blanching is to remove the point which contains toxic substances, after blanching it is best to pass through the cold water again, so as to ensure that the taste at the same time can also make the beans bright color.
Because of the thickness of the beans, the amount of water and the different fire situation of each family, this time is not fixed. The most accurate way to judge is to feel the time is almost the same, take a bean out of a small bite, a little chewing a few times, feel no smell of beans and crisp taste, immediately out of the pot into the cold water to cool down.
Introduction of bean curd
The bean curd is an annual climbing plant of the cowpea family, 2 to 4 meters long. The pods are pendulous, more or less swollen when young, and the young pods are used as a vegetable. The varieties can be roughly divided into four species according to the color of the pods: white-skinned species (light green), green-skinned species, red-skinned species, and mottled species; the seeds are kidney-shaped and 8-12 mm long; the flowering and fruiting period is in summer.
Nowadays, bean curd is cultivated in tropical and temperate regions of Africa and Asia. Bean curd is a heat-resistant vegetables, can withstand high temperatures, intolerant of frost, seeds at 25 ~ 35 ℃, germination faster, in the flowering and podding period need good sunshine, otherwise it will cause the fall of flowers and pods; bean curd root system of the soil adaptability is wide, but to fertile, well-drained, well-ventilated soil is good.
When the bean horn grows true leaves, it is easy to lead to the emergence of mold disease. Leaves are the main part of this disease, and in severe cases, it will cause the leaves to fall off. The disease can also be aggravated by heavy rain, humidity and high temperatures.
Refer to Baidu Encyclopedia - Beanstalks for more information