What are the ingredients of ulster vegetable roll?

For Pastry:

- 2 1/2 cups all-purpose flour

- 1 teaspoon salt

- 2/3 cups cold unsalted butter, cubed

- 1/4 cup ice water

For Filling:

- 2 tablespoons unsalted butter

- 1 medium onion, chopped

- 2 medium carrots, grated

- 1/4 cup chopped parsley

- 1 medium potato peeled and grated

- 1/4 head of cabbage, shredded

- Salt and pepper to taste

For Egg Wash:

- 1 egg, whisked

Instructions:

1. Make Pastry: In a large mixing bowl, combine flour and salt. Add cold cubed butter and use your fingertips to work the mixture until it resembles coarse crumbs.

2. Gradually add ice water, one tablespoon at a time, until the mixture just comes together and forms a ball. Be careful not to overmix.

3. Wrap the pastry dough in cling film and refrigerate for at least 30 minutes.

4. Prepare Filling: While the pastry dough is chilling, prepare the filling. Melt butter in a large skillet over medium heat. Add the onion and cook until softened, about 5 minutes.

5. Add the grated carrot, parsley, grated potato, and shredded cabbage. Mix everything well. Season with salt and pepper to taste.

6. Cook the filling over medium heat for 10-12 minutes, or until the vegetables are tender. Let the filling cool completely.

7. Assemble the Vegetable Roll: Preheat the oven to 400°F (200°C). Prepare a baking tray and sprinkle some flour on it.

8. Roll out the chilled pastry dough into a 12 x 16 inch (30 x 40 cm) rectangle on a lightly floured surface.

9. Spread the cooled vegetable filling evenly over the rolled-out pastry dough, leaving a 1-inch border on all sides.

10. Starting from one of the longer sides, carefully roll the pastry dough over the filling to form a long roll. Pinch the edges to seal the roll.

11. Brush the top of the vegetable roll with the beaten egg.

12. Place the vegetable roll on the prepared baking tray and bake in the preheated oven for 35-40 minutes or until the pastry is golden brown. If during the baking process, you notice the roll getting too dark on the top, cover it with aluminum foil.

13. Remove from the oven and let it cool slightly. Slice and serve warm or at room temperature.