West Indies Shepherds Pie

Name: West Indies Shepherd’s Pie
Ingredients: 2 lb. Yukon Gold potatoes, scrubbed, cut into 2 pieces; 1 tsp. kosher salt, plus more; 4 garlic cloves, finely chopped; ½ cup whole milk; 4 Tbsp. unsalted butter; ¼ tsp. coarsely ground black pepper; 1 lb. ground chicken; 3 scallions, thinly sliced; Zest of 1 lime; ½ habanero chile, seeds removed, finely chopped; 1 Tbsp. Angostura bitters; 1½ tsp. kosher salt; ½ tsp. coarsely ground black pepper; 2 Tbsp. vegetable oil; 1 medium sweet onion (such as Vidalia, Walla Walla, or Maui), finely chopped; 8 large garlic cloves, finely chopped; 1 medium tomato, coarsely chopped; 2 medium carrots, peeled, finely chopped; 1 1 piece ginger, peeled, finely chopped; ¼ cup ketchup; 1 Tbsp. chopped thyme; 2 oz. white cheddar cheese, coarsely grated (about ½ cup)