不知道。问了一下Chatgpt

"At Costco, salad is washed in a commercial-grade salad spinner. The salad is placed in the spinner and then rinsed with cold water. The spinner is then spun to remove any dirt or debris. The salad is then drained and ready to be served."

跟Aprilmei说的一样，估计各处都是这么洗的。Costco的Spring Mix 号称triple washed。 有人声称自己再手洗未必是好事。

所有跟帖： 

• 这是我从ChatGPT和google得到的： -6degrees- ♂ (1284 bytes) () 02/10/2023 postreply 12:31:08

• 你打算怎么做？：） -周老大- ♂ (0 bytes) () 02/10/2023 postreply 12:33:37

• 继续问： -6degrees- ♂ (1018 bytes) () 02/10/2023 postreply 12:38:58