Preheat oven to 400 degrees F (200 degrees C).
Using a rolling pin roll out the Puff Pastry (500 gram) until is about four millimeters thick. With a pizza cutter cut the pastry in 7x7cm squares.
With a sharp knife make a cut in all four corners of the square.
Place one or two slices of the Pancetta (150 gram) and some of the Medium Cheddar Cheese (150 gram) in the middle of the square.
Take all the four corners of the square and stick them together in the middle as to create a "flower" effect.
Place all the pastries in a baking tray lined with parchment paper or oven grease paper. Place the baking tray in a preheated oven for 20 minutes or until golden brown.