2, snow red also known as snow vegetables, rich in protein, dietary fiber, vitamins, calcium, phosphorus, iron, etc., has a high nutritional value, usually made into a pickle to eat, in general, snow red need to be pickled for 15 to 20 days to eat, because the nitrate in the pickle can be microbial reduction into nitrite, the beginning of the nitrite content will continue to grow, reach the peak will be decline, usually, vegetables pickled 20 days after the content is relatively low.