Green’s Dictionary of Slang

(US) absolutely new.

1825		J. Neal Brother Jonathan I 151: Bran-fire noo, as I’m alive!
1834		D. Crockett Narrative of Life of D.C. 72: I returned, and set out electioneering, which was a bran-fire new business to me.
1843		Wisconsin Exp. (Madison, WI) 27 Apr. 5/2: That are new bonnet trimming with red ribbings and that are bran-fire new silk gown.
1852		Kenosha Teleg. (WI) 2 July 2/4: The paper has put on a ‘bran fire new’ dress, and looks smilingly and neat.
1874		Nashville Union (TN) 14 June 2/1: It was a bran-fire new business to me.
1884		Chatham Record (Pittsboro, NC) 20 Mar. 1/2: I’m to have a bran-fire-new tool box if I raise the red heifer calf.
1896		Lenoir Topic (NC) 5 Feb. 3/3: Mr Robert Miller who has a bran-fire new wife has moved into the house Mr Crisp vacated.
1901		People’s Paper (Charlotte, NC) 4 Sept.7/4: [advert] Must get in shape by September the 1st with a bran fire new Stock of Shoes, Clothing, Dry Goods [etc].
1911		DN III 537: Bran-fired [...] Very; used only before ‘new’; e.g., ‘His hat is bran-fired new’.
1915		L.R. Dingus ‘A Word-List From Virginia’ in DN IV:iii 181: bran fire new, adj. Absolutely new.
1940		J. Stuart Trees of Heaven 246: I might get your old furniture since you’s gittin brand-fired new furniture [DARE].
1950		PADS 13.22: Brand-new, brand-fire-new [...] are all fairly common.
1966		Wilson Collection n.p.: That’s a bran-fire new one to me.