Marinade for 5-10 hours.

Bring an all metal pan up to *very hot*

Pre-heat broiler.

Pat dry meat.

Drop it in the pan, transfer the pan to the oven KEEP THE OVEN DOOR CRACKED to keep the heating element on.

Wait 4-5 min.

FLIP

Wait 3-4 min

Remove pan from oven.

Remove steak from pan, wrap in tin foil.

Melt some butter in the pan that's now got a bit of juice on the bottom.

Add a dash of worcestershire.

Slice meat very thin against the grain.

Salt meat.

Dip & Enjoy.