French would be easier to understand as peanut butter is "beurre d'arachides" (butter from peanuts). The "de" (or d' in that example) is given you the "context"

French would be easier to understand as peanut butter is "beurre d'arachides" (butter from peanuts). The "de" (or d' in that example) is given you the "context"/what the butter is made of. Same for apple juice, it's "jus de pommes" and etc.