Beef Soup with Lemon Grass - With greens

1 stalk lemon grass fresh, or 1 tb dried * 1 x black pepper freshly ground * 2 teaspoons nuoc mam fish sauce * 1 clove garlic chopped 6 ounces beef chuck[...]

1 stalk lemon grass * 1 tablespoon lemon grass dried 2 teaspoons fish sauce * 1 clove garlic chopped 6 ounces beef chuck sliced 1 teaspoon vegetable oil 2[...]