The chinese toon leaf contains nitrate, which can be decreased by blanching it the boiling water.
香椿叶中含有亚硝盐，用沸水烫后，可降低其含量。
Because oil noodles contain low levels of alkali add a little white vinegar to boiling water when blanching to reduce their alkali.
因油面含有少量的碱，汆烫时加入少许白醋，可降低碱味。
In order to weeding out nitrite in Chinese toon, choose water blanching and accretion with ascorbic acid, lemon acid and tea multi-hydroxybenzene.
对香椿亚硝酸盐的除去方法进行了讨论，选择香椿漂烫和添加抗坏血酸、柠檬酸、茶多酚可以有效去除亚硝酸盐的含量。
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