Jerome Gambit: Tempo Waste

One way for Black to make the Jerome Gambit "playable" is to give up tempos without gaining much in return. Bit by bit, White gets more compensation for his sacrificed material, until he has the better game.  

angelcamina - shahramkhoshseffat
1 0 bullet, lichess.org, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+

 4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ng6 

7.Qd5+ Ke8 8.Qxc5 d6 9.Qe3 Nf6 

10.O-O Kf7 11.f4 Re8

Stronger than the superficially attractive 11...Ng4, as in angelcamina - frn000,1 0 bullet, lichess.org, 2019 (1-0, 23) 

12.Nc3 

angelcamina has also played 12.d3, in  angelcamina - Danielpia, 1-0, bullet, lichess.org, 2019 (1-0, 28) 

12...Kg8 13.d4 Ng4 14.Qg3 Nf6 

15.f5 Ne7 16.Bg5 Nc6 17.Bh6 

This works, but more solid was 17.Rd1.

17...Nh5

This will not turn out well.

18.Qg4 Qf6 19.Qxh5 gxh6 20.Qxe8+ Qf8 21.Qxf8+ Kxf8 

White is up the exchange and a couple of pawns. He has only to be careful about the clock.

22.Rad1 Nb4 23.Rd2 Nc6 24.a3 Bd7 25.Nd5 Rc8 26.Re1 a5 27.g4 a4 

28.e5 dxe5 29.dxe5 Na5 30.Nf6 Be8 31.Nxh7+ Kg7 32.Nf6 Bf7 33.Rd7 Rf8 34.Nh5+ Kg8 35.e6 White won on time

White's "Jerome pawns" would win the day, in any case.