In a bowl, combine flour, sugar, and salt. Add cold cubed butter and mix until the mixture resembles coarse breadcrumbs.
2
Gradually add cold water and mix to form a dough. Wrap in plastic film and rest for 1 hour.
3
Prepare the filling: sauté onions and garlic, add chicken and seasonings, and cook until the chicken browns. Add vegetables and cook until tender. Add water and seasoning as needed. Allow to cool.
4
Divide dough into 12 equal portions. Roll out each piece, fill with chicken mixture, brush edges with egg wash, and twist and pinch edges to seal.
5
Place on a lined baking pan and bake in a preheated oven at 190°C (375°F) for 15 to 20 minutes until golden. Brush with egg wash. Alternatively, you can deep-fry.