Preparation

• Preheat the oven to 400°F.

  Sauté the leeks, garlic and sugar in the olive oil and butter in a skillet over medium heat for 4-5 minutes, stirring constantly. Add the stock and bay leaf, and season. Cook until the leeks are very tender, about 10 minutes. Remove the bay leaf and cool. Transfer the mixture to a bowl and combine with the cheese and oregano.

  Spread a sheet of filo on the work surface, and cut lengthwise into thirds. Keep the remaining filo covered with a damp kitchen towel. Each strip will make 1 börek.

  Brush a filo strip with melted butter and place a tablespoon of filling across the corner of one end. Fold this corner up and over to form a triangle and enclose the filling. Fold over again, and continue until you have a triangular pastry parcel. Repeat with remaining filo and filling.

  Arrange the böreks on a baking sheet. Brush with more melted butter and sprinkle with the seeds. Bake for 20 minutes, until golden brown.