Use fresh or fresh-frozen swordfish steaks for this tender grilled fish dish. Besides being cubed and skewered, it can also be grilled whole or in un-skewered cubes. Be careful not to overcook the cubes or you'll end up serving (exceptionally flavorful) overcooked chewy chunks. Onions and tomatoes can use the same marinade and be grilled separately. Serve with lemon wedges, a rice pilaf, and warm pita bread.
In a plastic freezer bag, mix together the lemon juice, garlic, oil, salt, pepper, bay leaf, and oregano. Cut swordfish into 1¼-inch cubes. Add to bag with marinade, seal, and shake. Let marinade at least 1 hour.
Heat grill to high. On soaked wood skewers or metal ones, weave on swordfish cubes, leaving a little bit of space between them. Grill directly over the heat, 2 to 3 minutes per side. The cubes should be fully cooked but still moist. Serve with lemon wedges over rice.
Notes
Cut vegetables like bell pepper, tomato, zucchini, and onion may be added to the dish by add them to the marinade with the swordfish and grilling them on separate skewers.