Ginger Chicken Soup

Name: Ginger Chicken Soup
Ingredients: 2 tablespoons olive oil; 1 1/2 cups diced yellow onion; 1 1/2 cups chopped carrots, 1/2-inch pieces; 1 cup chopped celery, 1/2-inch pieces; 2 1/2 tablespoons minced fresh ginger; 3 cloves garlic, minced; 2 teaspoons dried parsley; 1 teaspoon salt; cracked black pepper; 2 green plantains, peeled and sliced lengthwise and into 1/2-inch pieces; 4 cups chicken broth; 1 1/2 pounds pre-cooked and shredded chicken thigh or rotisserie chicken; 3 tablespoons unsalted butter; 1 tablespoon apple cider vinegar; Juice of 1/2 lemon (more if desired); handful cilantro leaves, chopped