Defrost one roll of puff pastry (you only need half then can roll up and freeze the rest)

Place meat in middle of pastry. The using a brush, brush the 2 edges with egg, then roll the pastry to make a roll with seam on bottom.

Place on some grease proof paper and put into freezer for 20 mins (massive important step if you want crispy golden pastry). Pre heat oven to 200c

Remove from freezer and using paper transfer to baking sheet.

Egg wash all over roll

Bake for 20-25 mins until golden brown (also meat cooked through - mine start to slightly ooze from ends)

Carefully remove from oven to a cooling rack and leave for at least 10 mins.