Saute onion and garlic for 2 minutes. Add bacon and cook for 2 minutes. Allow to cool for 10 minutes.
Add remaining filling into a bowl. Use your hands to mix well.
Lay out a sheet of puff pastry and cut the pastry in half. Cut into a long log shape. Shape the filling into a long log, making sure it has no gaps. Brush the edge of the pastry with egg, then roll up to finish with the seam side down. Brush tops with egg before baking.
Preheat oven to 180C/350F. Line 2 baking trays with baking paper. Bake for 30-35 minutes, swapping trays halfway through cooking. Cool slightly on trays. Serve with tomato sauce. Enjoy
Keyword apple cider vinegar, brown onion, garlic, pork mince, puff pastry, streaky bacon