Thai Spareribs

Name: Thai Spareribs
Ingredients: 6 pounds meaty spareribs (about 2 racks), cut into 2-rib portions; Boiling water; 2 large lemongrass stalks; 1/2 cup plus 6 tablespoons tamari soy sauce; 1/2 cup (packed) golden brown sugar; 1/2 cup dry Sherry; 2 tablespoons Thai peanut sauce; 2 tablespoons Asian sesame oil; 4 large garlic cloves, peeled; 1 1 1/2-inch piece fresh ginger, peeled, chopped; 3/4 cup canned unsweetened coconut milk; Sesame-Cilantro Rice