Step 1

Whisk all of the ingredients together in a large shallow bowl or plastic container. Add the meat, rotating to evenly coat, and cover with plastic wrap (or lid if using container).

Step 2

Refrigerate for 2 hours or overnight.

Step 3

Heat barbecue (or grill) on high heat. Note that lean flank steak is best cooked rare, while skirt steak can be cooked well without losing moisture or flavor because it has more fat marbling.Remove the flank steak from the marinade, and discard excess marinade. Grill for 5-7 minutes per side, or until desired doneness is reached.

Step 4

Transfer to a plate and allow to rest for 5-10 minutes.

Step 5

To serve, slice against the grain into thin strips.