matjes herring
/ˈmatjəs ˈhɛrɪŋ/(also maatjes herring)
noun
= mattie.
Origin
1930s; earliest use found in ‘Nathanael West’ (1903–1940), author (real name Nathan Weinstein). From Yiddish matyes-hering and its etymons German Matjeshering and Dutch maatjesharing, with second element remodelled after herring.