Preparation :
Knead dough ready for baking using the flour, butter, one
egg, salt, and sour cream and leave it to rest for one hour:
Rested dough roll out and cut up in rectangle pieces (dimension:
10x12 cm).
On each piece put one canned sardine and some chopped parsley, cover
with another rectangle piece of dough and press edges firmly to
seal.
Brush it all, with beaten yolk (beaten with milk).
Bake it in the oven, pre-heated to 250 C, until golden.