When is the best before date of this bread?
このパンの賞味期限はいつですか - Weblio Email例文集
Bread with adequate date of minimum durability is produced by one of various breadmaking methods involving stress load on yeast and including frozen dough breadmaking method. 冷凍生地製パン法を含め酵母にストレス負荷のある各種の製法での製パンを行い、賞味期限の長いパンを製造する。 - 特許庁