Mixing old and new food dates｜新旧食品混合日期

原创练习题 / Practice question

Monday-cooked chicken is mixed with new ingredients on Wednesday for refrigerated ready-to-eat salad. Which date governs?

周一制作的熟鸡肉与周三新配料混成冷藏即食沙拉，日期怎样算？

1. Reset everything to Wednesday / 全部改成周三
2. Start from plating day / 以装盘日为起点
3. Keep the earliest ingredient date / 沿用最早配料日期
4. Reset after each stirring / 每次搅拌就重置

答案与解析 / Answer and explanation

Keep the earliest ingredient date. The combined food retains the date marking of the earliest-prepared ingredient.

沿用最早配料日期。混合后的食品保留最早制备配料的日期标记。