Jamaican Chicken and Potato Curry

Name: Jamaican Chicken and Potato Curry
Ingredients: 2 tablespoons vegetable oil; 1 yellow onion, chopped; 2 garlic cloves, minced; One 1-inch piece fresh ginger, peeled and minced; 1 Scotch bonnet or habanero chile, minced; 3 tablespoons Jamaican curry powder; 1 cup chicken stock; One 13 1/2-ounce can coconut milk, well shaken; 1 teaspoon salt; 1 1/2 pounds potatoes, peeled and cut into 3/4-inch cubes; 1 pound boneless, skinless chicken breasts, thinly sliced; 2 teaspoons white vinegar; Coarsely chopped cilantro leaves, for garnish