Triangles with Swiss Chard

It is necessary for the dough:

80 g margarine,
0.5 kg of flour,
2 eggs,
125 ml of water,
half a teaspoon of salt,

It is necessary for the filling:
 
1 kg spinach,
1 leek,
100 g rice
4 tablespoons parsley
salt,
pepper,
oil.

For the coating:

egg white,
sesame seeds.

Preparation:
 
In a little oil stew finely sliced ​​boiled chard and finely chopped leek.
Add rice, parsley, salt, pepper and stew about 20 minutes.
In a bowl put flour, eggs, margarine, salt and water and knead the dough.
Divide dough into four parts.
Every part develop by the rolling pin in the shape of a rectangle, cut into strips and each coat with oil.
On the strips put the custard and fold into a triangle.
Triangle, line up and put in pan.
Triangles coat with whisked egg white and sprinkle with sesame seeds and bake in preheated oven at 220 ⁰ C until golden brown.