Spinach and Yogurt Soup

1 1/2 tablespoons butter or margarine
1 medium onion, finely chopped
2 teaspoons all-purpose flour
1/3 teaspoon salt
1/4 teaspoon dried tarragon
1 pinch ground nutmeg
1 pinch cayenne pepper
1 (16 ounce) package frozen chopped spinach, thawed
2 cups chicken broth
3/4 cup plain yogurt
2 slices lemon, cut in half for garnish

Indian Chicken Curry (Murgh Kari)

2 pounds skinless, boneless chicken breast halves
2 teaspoons salt
1/2 cup cooking oil
1 1/2 cups chopped onion
1 tablespoon minced garlic
1 1/2 teaspoons minced fresh ginger root
1 tablespoon curry powder
1 teaspoon ground cumin
1 teaspoon ground turmeric
1 teaspoon ground coriander
1 teaspoon cayenne pepper
1 tablespoon water
1 (15 ounce) can crushed tomatoes
1 cup plain yogurt
1 tablespoon chopped fresh cilantro
1 teaspoon salt
1/2 cup water
1 teaspoon garam masala
1 tablespoon chopped fresh cilantro
1 tablespoon fresh lemon juice