1. Heat margarine in skillet over medium heat until sizzling. Add onion, and sauté 3 to 4 minutes, or until softened. Add jackfruit, and cook 20 minutes, or until browned and caramelized.
2. Add broth, 2 Tbs. lemon juice, oregano, soy sauce, and coriander, and season with salt and pepper, if desired. Simmer 10 to 15 minutes, or until liquid has almost completely evaporated.
3. Stir in remaining 2 Tbs. lemon juice.