You need two different ingredients to make the dough and the filling for this dish.

Ingredients for the dough:
1 large sweet potato peeled ,boiled and mashed finely
500gms plain flour,
2 teaspoons dry yeast granules,
4 tablespoons sugar,
250gms butter,
2 egg yolks,
4 tablespoons warm milk ,
2 tablespoons brandy

Ingredients for the filling:
400gms minced meat of choice,
1 teaspoon mixed spice powder (Grind 2 star-anise, 4 cloves, 1'' cinnamon stick, small piece of nutmeg - for details see also Tip 1
1 teaspoon freshly ground pepper,
2 big onions peeled and chopped,
2 potatoes peeled and diced,
2 tablespoon sugar,
1 teaspoon light soy sauce
2 tablespoon oil for frying the filling
 

3 step process (1) make the dough (2) cook the filling (3) make the buns

(1) To make the dough:
Sift flour and yeast into a bowl;
Add in the sugar and mix to combine;
Rub in the butter to form breadcrumb texture, then add the yolks one at a time;
Knead well to achieve a soft dough;
Add the warm milk, brandy and mashed sweet potato one set at a time;
Knead well to incorporate all the ingredients into a soft smooth dough;
Set aside to rise.

(2) To cook the filling:
Heat oil in a pan and put in the minced meat stir fry 1 minute;
Add the onions potatoes and spices;
Stir the mixture;
Add 2 Tablespoon water to help cook the meat and potatoes;
Add the soy sauce and sugar;
Taste and adjust;
Stir fry until all moisture is absorbed and meat cooked;
Remove from heat to cool.

(3) To make the buns (Pangsusis):
Measure balls of dough to 60grams weight;
Flatten on palm of hand;
Put 1tablespoon filling in the centre of dough;
Wrap to form an enclosed bun tapering at the edges;
Brush with egg white;
Repeat process.

Bake the buns on greased baking sheet at 180 degrees Centigrade for 20-25 minutes.
 
Makes  about 15 buns