Dried Shrimp 蝦米 Ebi

Whether farmed or wild caught, the cheaper the shrimp, the more likely it is to have been treated with chemicals, particularly sodium tripolyphosphate and sodium bisulfite.

Tripolyphosphate is generally added to shrimp after it’s been peeled, so to avoid it, try to buy shell-on shrimp and peel it yourself.

Sodium bisulfite is used to keep shrimp shells from undergoing melanosis (also called black spot), which is a darkening of the head and shell after the shrimp are harvested and exposed to oxygen.

Shrimp farmers dip baskets of shrimp after they are caught into a solution of sodium bisulfite to maintain a healthy appearance.

If you want to avoid additives and prioritize freshness, buy frozen shrimp with the only word on the ingredients list being "shrimp." At many supermarkets, the "fresh" shrimp at the counter are likely to have been previously frozen anyway.

Still, it is likely more sustainable to purchase wild-caught, North American shrimp, as farmed, imported shrimp are often fed antibiotics.

無論是養殖還是野生捕撈，越便宜的蝦越有可能經過化學處理，特別是三聚磷酸鈉和亞硫酸氫鈉。

三聚磷酸鹽一般是在蝦去皮後添加的，所以為了避免這種情況，盡量買帶殼蝦,自己去殼。

亞硫酸氫鈉用於防止蝦殼發生黑變（也稱為黑斑），這是在蝦收穫並暴露於氧氣後頭部和殼變黑的現象。
蝦農在將捕獲的蝦浸入亞硫酸氫鈉溶液中以保持健康的外觀。

如果您想避免添加劑並優先考慮新鮮度，請購買配料表上唯一一個詞是“蝦”的冷凍蝦。在許多超市，櫃檯上的“新鮮”蝦很可能之前已經冷凍過。

不過，購買野生捕獲的北美蝦可能更可持續，因為養殖的進口蝦通常餵抗生素。