Ox Tongue in Sweet Nutmeg Sauce (Semur Lidah)

Ingredients:
10 cups water
1¼ lb. ox tongue, washed well
3 cups beef broth
4 Tbs. sweet soy sauce
2 Tbs. soy sauce
¾ tsp. ground white pepper
¼ tsp. fresh grated nutmeg
3 fragrant lime leaves
2 Tbs. fried shallots
3 medium-size potatoes, peeled and cut in ¾-inch dice
Fried shallots to garnish
Instructions:
Bring water to a boil in a heavy stockpot, add whole ox tongue and return to a boil. Reduce heat and simmer for approximately 1 hour, or until tongue is nearly cooked. Strain stock and cool tongue down to room temperature. Peel skin off with a sharp knife.
Slice ox tongue in thin even slices and place in a saucepan. Pour in beef stock and add both types of soy sauce, pepper, nutmeg, lime leaves and fried shallots. Bring to a boil, reduce heat and simmer for 10 minutes. Add potatoes and continue to simmer until potatoes are cooked.
Garnish with fried shallots.

Helpful hints: The flavor of this dish seem to intensify if it is kept and reheated; add the garnish only when serving. If ox tongue is unavailable, substitute beef or calf tongue