The compound adjective in the sentence is "sourdough."
The compound adjective in the sentence is "sourdough." A compound adjective is made up of two or more words that work together to describe a noun. In this case, "sourdough" is describing the type of bread. To identify the compound adjective in a sentence, you need to look for words that are joined together without commas and are used together to describe another noun. In this example, "sourdough" is the compound adjective because it is modifying the noun "bread."