Spare Rib Noodle Soup

Name: Spare Rib Noodle Soup
Ingredients: 1 package rice stick noodles (sometimes labelled banh pho); 23 ounces (640 gram) pork spare ribs; 1 teaspoon salt; 1/2 teaspoon black pepper; 1 medium onion, sliced in half; 1 ounce (30 grams) ginger; 1 ounce (30 grams) garlic, unpeeled; 1 teaspoon vegetable oil; 6 cups water; 1 stalk lemongrass, white part only; 1 rib celery (including leaves); 1 tablespoon black peppercorns; .5 ounces (15 grams) rock sugar; 2 tablespoons fish sauce; 1 head bok choy; 2 tablespoons fried shallots (for garnish)