Pat the skirt steak dry with paper towels
Place the steak in a shallow dish or resealable bag
Combine marinade ingredients in a bowl
Use oil, acid, salt, and seasonings
Add soy sauce, citrus juice, vinegar, garlic, pepper, and herbs if desired
Pour the marinade over the steak
Turn the steak to coat evenly
Seal the bag or cover the dish
Refrigerate for at least 30 minutes
Marinate for 2 to 6 hours for best flavor
Avoid marinating longer than 12 hours if the marinade is acidic
Remove the steak from the marinade before cooking
Let excess marinade drip off
Discard used marinade unless it is boiled first
Cook the steak over high heat after marinating