Green’s Dictionary of Slang

to talk slowly and solemnly.

1838		J.C. Neal Charcoal Sketches (1865) 126: Louder, Spooney! [...] Keep a ladling it out strong!
1903		Ade People You Know 92: I know it’s Guff [...] but my Stars! He can ladle out that Soothing Syrup.
1910		‘Doss Chiderdoss’ ‘Telling ’Em Something’ Sporting Times 3 Dec. 2/2: The Chancellor, knowing they’re open to ’ank, / Is a dabster at ladling it out.
1936		(ref. to 1920s) L. Duncan Over the Wall 29: The dick got up and ladled out the broth to the Judge again and spelled out his pedigree.