plum broth
/ˌplʌm ˈbrɒθ/Now historical
noun
A thick soup made of beef, prunes, raisins, currants, white bread, spices, wine, sugar, and other ingredients, formerly a traditional Christmas dish.
Origin
Early 17th century; earliest use found in Thomas Overbury (d. 1613), courtier and author. From plum + broth.