Mayonnaise
To my chagrin, I remember watching the Mayo Clinic episode of Good Eats and learning that mayonnaise is named for a military victory in honor of a French victory on the isle of Majorca, and from practical experiments I can attest home-made mayo really does taste better than store-bought because you can use better oil than expeller-pressed soybean.
I've been sitting here for an hour squirming awkwardly because NERDFACTbuni needed to say something but INONTHEJOKEbuni knew better.