Preheat the oven to 180℃
Add all the ingredients into a bowl and with your hands, mix until fully combined together and divide into 4 equal amounts.
Using a large baking tray, cut 5 pieces of baking (parchment) paper (I cut these to the size of my baking tray). Place one portion of the donor mix on a piece of baking paper, then cover it with another sheet of paper and flatten the mince. Using a rolling pin, spread the meat into a very thin, even rectangle. If any mince comes out of the side, remove and place into another area.
To roll it up, remove the top piece of paper. Starting from the long side, use the bottom paper to roll the meat, just like rolling a Swiss roll or you can flatten it, whatever is easier. Place on the baking tray and repeat with the other three portions.
Place in the oven and bake for 20mins. Remove from the oven, unravel each of the rolls so that the donor meat falls back onto the baking tray, return to the oven and cook for a further 5mins, just to crisp up a little, but don't over cook as the meat will go too crispy and will dry out. Remove from the oven, tear up into strips and stuff into a warm pita with tomatoes, lettuce, onion, pickles, and your favourite sauce and serve immediately.