天气预报 > 其他 > 为什么饺子煮熟会浮起来
为什么饺子煮熟会浮起来
更新时间: 2019-06-02 00:00:00  

因为饺子加热后皮内产生水蒸气,饺子皮膨胀,产生浮力。生饺子的密度比水大,放在水里自然会沉下去。随着水温的升高,饺子和皮子都吸饱了热水以后会渐渐膨胀起来,体积增大,特别是馅子里的空气膨胀程度更大,整个饺子的体积增大,密度变小,饺子就开始上浮,经常下厨房的人,往往就通过看饺子是否浮起来,来判断饺子的生熟。

关键词: 为什么 饺子 起来

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