Begin by blending the kiwi, green onions, pineapple juice, soy sauce, brown sugar, sesame oil, garlic, and ginger in a food processor. Process until smooth, which should take about 1-2 minutes.

Place the beef short ribs into a large Ziploc bag or a shallow dish, then pour the prepared marinade over the ribs, ensuring they are well-coated. Seal the bag tightly or cover the dish, and refrigerate for at least 2 hours.

Decide whether you’ll be grilling, air frying, or pan frying your ribs. Preheat your grill to medium-high, or if using an air fryer, set it to 400°F.

For grilling, place the marinated ribs on the grill and cook for about 5 minutes on each side, looking for a golden-brown color and slight char.

As you cook the ribs, check for doneness visually—look for a rich brown color and the juices running clear.

Once cooked, remove the beef ribs from the heat and allow them to rest for a few minutes. Serve immediately while they're still warm.