- In a large bowl, add oil, vinegar, lime and orange juice, garlic, jalapeño, coriander, cumin, pepper, and chilli powder. Whisk them all together. You should have about 360ml (1 ½ cup) of marinade.
- Put the steak into a large resealable bag and pour over about 240 ml (1 cup) of the marinade. Seal the bag and shake it to evenly coat the steak with the marinade
- Allow the steak to marinate for at least 1 hour in the refrigerator. 3 to 4 hours is ideal if you have the time.