Jibarito Sandwich

Ingredients

• ½ cup fresh orange juice
• ¼ cup fresh lime juice
• 1 ½ tablespoons olive oil
• 2 ½ teaspoons adobo seasoning
• ½ teaspoon garlic powder
• 3 garlics, minced
• ¼ teaspoon freshly ground black pepper
• 12 oz flank steak
• 1 tablespoon vegetable oil
• ⅓ cup mayonnaise
• ¼ cup ketchup
• 2 cloves garlic, minced
• ½ teaspoon kosher salt
• 4 cups vegetable oil
• 2 large green plantains
• kosher salt, to taste
• 4 slices cheddar cheese, halved lengthwise
• ¼ cup red onion, thinly sliced
• ½ cup fresh cilantro, and tender stems
• ½ cup shredded lettuce
• 1 small tomato, thinly sliced
• ¼ avocado, thinly sliced