Sausage Rolls are VERY English. I hadn't even heard of them until a few years ago. My Sausage Rolls are incredible. They have a flakey puff pastry filled with a savory sausage filling. Perfect for lunch, dinner, or a snack.
For the filling, mix the pork with the herbs, spices, breadcrumbs, salt, and pepper. Break off a little piece and fry it so you can check the seasoning.
Set filling in refrigerator for at least 30 mins.
Combine the butter cubes in a bowl with the flour and salt, then add just enough water to bring together into a fairly firm dough.
On a floured surface, roll out the dough in one direction, away from you, to a rectangle about 1/4 inch thick.
Fold the two short ends into the middle, so they overlap, like an envelope.
Give the pastry a quarter-turn and repeat the rolling and folding process five more time
Wrap the pastry in cling film, then rest it in the fridge for 30 minutes–1 hour.
Roll out the pastry on a floured surface to an oblong, about 17" x 124.5" and 1/4" thick.
Lay the sausage along one long side of the pastry, about 1.5" in from the edge. Brush this pastry edge with a little egg wash and fold the other side of the pastry over the top of the filling to enclose it. Crimp the edges together well to seal.
Lightly brush the pastry with a little of the egg wash, then scatter over the fennel seeds and a light sprinkling of flaky salt. Place the sausage roll in the fridge for 10 minutes or so to firm up. Meanwhile, preheat the oven to 350°F
Using a serrated knife, cut the sausage roll into eight pieces and place on a baking tray lined with parchment.
Bake in the oven for 35–45 minutes, until golden brown.
Remove the sausage rolls from the tray to a wire rack to cool. Eat warm or leave to cool before serving.