This is sour curry that is popular in Bombay. In this recipe it is made with pork, but it can be made with any meat, with poultry, or even with shrimps.
2 pounds lean pork, cut into 3/4-inch cubes
1/2 cup vinegar
4 medium onions, chopped
1 teaspoon minced garlic
1 tablespoon minced gingerroot or 1/2 teaspoons powdered ginger
1 tablespoon mustard seed
1 teaspoon ground turmeric
1/2 teaspoon cayenne
1/4 cup cooking oil
1 cup chicken bouillon
6 medium potatoes, peeled and quartered
Marinate meat in vinegar, onions, garlic, and seasonings for 2 hours or more. Place in top-stove casserole with oil and bouillon. (Sesame oil is used in western India, but any cooking oil will do.) Cook over medium heat for 20 minutes. Add potatoes and cook slowly, covered; for about 40 minutes, or until they are tender. Add more bouillon if necessary. Makes 6 servings.