Three days. According to the query Sohu official website, fresh lye bread put refrigerator refrigeration put three days. Refrigerator freshness layer for one degree above zero to seven degrees, fresh lye noodles put refrigerator freshness layer, three days does not affect the consumption, but after three days, it is not suitable for consumption. Lye bread, a German snack, is mainly made of flour. Lye bread dough production does not require special materials, ordinary bread flour can be.