Up to 2 hours before grilling, mix together oil, soy sauce, garlic paste, wine vinegar, and chili paste.
Place flank steak in a platter with deep sides and pour on the mixture.
Turn the flank steak in the marinade periodically to make sure that both sides are covered.
Grilling
Set BBQ to max and pre-heat for about 5 minutes.
Set flank steak in the middle rack and grill for 3-4 minutes, close the cover while grilling.
After 3-4 minutes, turn the flank and grill for another 3-4 minutes with the cover closed.
Rest
Allow the flank steak to rest for 5-10 minutes before slicing, this will allow the juices to draw back into the meat.
Flank is best sliced on a 45° angle, meaning that the meat is not sliced straight. The slices should be cut in a direction away from you, the thickness should be about 1/4".
