How To make Asparagus and Crab Meat Soup Mang Tay Nau Cua

4 c Chicken broth
1 tb Plus 2 teaspoons nuoc mam
-(Vietnamese fish sauce) 1/2 ts Sugar
1/4 ts Salt
1 tb Vegetable oil
6 Shallots, chopped
2 Garlic cloves, chopped
8 oz Fresh or canned lump crab
-meat, picked over and -drained Freshly ground black pepper 2 tb Cornstarch or arrowroot,
-mixed with 2 tablespoons -cold water 1 Egg, lightly beaten
15 oz White asparagus spears, cut
-into 1-inch sections with -canning liquid reserved 1 tb Shredded coriander
1 Scallion, thinly sliced
Combine the broth, 1 tablespoon of the fish sauce, the sugar and salt in a 3 quart soup pot. Bring to a boil. Reduce the heat and simmer. Meanwhile, heat the oil in a skillet. Add the shallots and garlic and stir-fry until aromatic. Add the crab meat, the remaining 2 teaspoons fish sauce and black pepper to taste. Stir-fry over high heat for 1 minute. Set aside. Bring the soup to a boil. Add the cornstarch mixture and stir gently until the soup thickens and is clear. While the soup is actively boiling, add the egg and stir gently. Continue to stir for about 1 minute. Add the crab meat mixture and asparagus with its canning liquid; cook gently until heated through. Transfer the soup to a heated tureen. Sprinkle on the coriander, scallion and freshly ground black pepper.