豆豉，是一种豆制品又称为大苦、荫豉、幽菽、嗜，方言名称有豆豉颗（贵阳）、豆发（雷州）、豆咸／荫豉（厦门）等。

在先秦文献中未发现关于豆豉的记载。豉最早出现在汉代。《史记·货殖列传》提到豉，《前汉书·货殖传》中记述两个商人因因经营豉的生意而致富；马王堆汉墓中126、301两个缸里盛豉。汉魏时期，豉是日用的调味品，也可以入药。《齐民要术》、《本草纲目》都记载有咸豆豉和淡豆豉的制法。

Douchi (Chinese: 豆豉, Pinyin: dòuchǐ, Jyutping: dausi) is a type of fermented and salted black soybean. In English, it is known as fermented black soybeans, Chinese fermented black beans (Chinese: 黑豆豆豉, Pinyin: hēidòu dòuchǐ, Jyutping: hakdau dausi), salted black beans, salty black beans, or just black beans. They are a flavoring most popular in the cuisine of China, where they are most widely used for making black bean sauce.