In the Philippines, we have a favorite brand of bottled barbecue marinade that's quite convenient to use. It's not always available here so I made my own basic marinade with key lime juice, minced garlic, light soy sauce, pepper, apple cider vinegar and brown sugar. A little catsup or hot sauce may also be added to thicken the marinade and also for color and extra flavor. Serve with a vinegar dip with a little minced garlic seasoned with salt and pepper. I served these with slices of cucumber and tomatoes. I also made a pickled cucumber side dish to go with this. Just layer thinly sliced cucumbers in a bowl then pour in a mixture of vinegar, salt, pepper and sugar. Refrigerate until serving time and serve with the barbecue.