Fish Stew with Rice

Ingredients

 * 2 slices onion
 * 5 tablespoons oil
 * 3 tablespoons tomato concentrate
 * 2 lb fish, boned and cut in large pieces
 * 1½ pints water
 * 2 teaspoons salt
 * 2 carrots, sliced
 * ½ lb cabbage, shredded
 * 2 small sweet potatoes, cut in 1-inch cubes
 * ¼ lb okra (½ packet frozen okra)
 * 1 lb cooked rice

Directions

 * 1) Cook onion in hot oil until tender but not brown.
 * 2) Add tomato concentrate and fish.
 * 3) Cover and cook over low heat for ½ hour.
 * 4) Add water, salt and vegetables to fish mixture; cook gently for 1 hour.
 * 5) Place a portion of rice in the centre of a plate and ladle stew over rice.