Green’s Dictionary of Slang

coffee and cakes or coffee and doughnuts, i.e. the cheapest meal available in a café or diner.

1907		B. Fisher A. Mutt in Blackbeard Compilation (1977) 8: [caption] Sinkers and —.
1920		O.O. McIntyre Bits of New York Life 20 Dec. [synd. col.] A dime will not buy a Bowery flop these days and a nickel no longer purchases ‘coffee and’ even on Avenue A.
1930		C.R. Shaw Jack-Roller 115: We went across the street to have some ‘coffee and’.
1940		‘Argot of the Sea’ in AS XV:4 Dec. 450/2: coffee an, coffee and. Coffee and sinkers (doughnuts) or coffee and snails (cinnamon rolls).
1943		W.F. Whyte Street Corner Society (1955) 26: The bowling was followed by ‘coffee-ands’ at Jennings’.
1956		F.O. Beck Hobohemia 73: He lived on the [...] simplest fare himself and when solicited gave his brother only ‘coffee and—’.
1965		S.E. Wallace Skid Row 20: He [...] established a number of station houses throughout the country where hoboes might get their ‘coffee an’s’.
1978		R. Price Ladies’ Man (1985) 252: Doing a recap of the night over coffee and.
1996		H. Roth From Bondage 341: I’m gittin’ some coffee-an’, right away.