In a medium pan heat up olive oil, add the onion until soft for 3-5 minutes and then add the garlic for a further 2 minutes.
Add ground cloves, cinnamon, cumin, and oregano to the onion-garlic mixture and stir until fragrant.
Mix in the tomato paste. Add the jackfruit with the soy sauce and maple syrup and stir to combine. Season with pepper.
Simmer for 10 minutes and set aside.
Spread the jackfruit on a lined baking tray and place in a preheated oven on grill at 180°C for 5-10 minutes, until the jackfruit becomes a little browned around the edges.
To make the tzatziki sauce, add all ingredients in a large bowl and mix well to combine.
To assemble, warm the pita breads in the oven for 2 minutes, spread with a generous amount of tzatziki sauce, top with tomatoes, onion, fried potatoes, jackfruit and some parsley and roll the pita gently securing it with baking paper and string.