Sweet Banana Tostones with Caribbean Lobster and Hearts of Palm Salad

Name: Sweet Banana Tostones with Caribbean Lobster and Hearts of Palm Salad
Ingredients: 1 onion, peeled and quartered; 1 bay leaf; 8 whole peppercorns; 1/4 cup kosher salt; 2 (1 1/4 pound) Caribbean (spiny) lobsters; 1 mango, peeled and chopped; 1 Scotch bonnet pepper, seeded and chopped; 2 scallions, green parts only; 1/2 bunch fresh cilantro leaves; 1 cup unsweetened coconut milk; 1/4 cup extra virgin olive oil; 2 limes, juiced; Kosher salt and freshly ground black pepper; Vegetable oil, for frying; 2 green plantains; 1 can hearts of palm, rinsed and drained; 1/2 red onion, sliced thin; 1/4 cup cilantro leaves, for garnish; Lime wedges, for garnish