Mix all ingredients and poor into a gallon ziplock bag with the steak.
Leave marinating for 5min-24hrs (depending on how much time you have)
Preheat grill to 450*
Oil the grates of the grill with coconut or avocado oil spray
Place flank steak on the grill
Grill for 4 minutes on medium heat.
Flip and grill for another 4 minutes on medium heat.
Meat should reach an internal temp of 125-135* before done.