twice laid, n. — Green’s Dictionary of Slang

twice laid n.

[i.e. the remains of a previous meal; ult. naut. twice laid, cable made from the yarns of old rope]

1. a dish of cold fried fish and potatoes.

1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.
1890–1904		Farmer & Henley Sl. and Its Analogues.
1895		Crowe Aus. Sl. Dict. 90: Twice Laid, when the refuse of a past meal is hashed for the present meal.

2. an unspecified dish (a form of savoury pudding or stew) served in RN messes.

1831

Navy at Home I 38: By the time any given fid, or morsel, of said pudding, dog’s body, twice laid, or junk (salt beef) got to the further end of the table [etc.].