Are there known opening gambit lines for black in the French defence? I play the French defence with both colours (white and black) and generally play any of the orthodox main line openings (there are many eg Advance, Exchange, Classical,Tarrasch etc giving rise to many variations as openings and defence variation eg early ...Qb6 Wade var.). 

There are some gambit openings from the White side and as white I often play the Milner-Barry Gambit and have started to reacquaint myself with the Alapin-Diemer (I sometimes face the MBG as black). So far though I have not encountered a gambit line for the black side in the French and so wonder if there are any such playable black French gambit opening lines?

If anyone knows one or more I'd be interested to hear.
I look forward to replies and comments, but meanwhile I will keep searching myself to find such a gambit for black in the French defence opening.....
There's the Poisoned Pawn variation of the Winawer:

[fen ""]

1. e4 e6
2. d4 d5
3. Nc3 Bb4
4. e5 c5
5. a3 Bxc3+
6. bxc3 Ne7
7. Qg4 Qc7
8. Qxg7 Rg8
9. Qxh7 cxd4


In general, though, it's hard to find a good pawn for Black to give away in the French.