Dice the onion and chop the garlic and sauté together with the cumin and ginger. Once cooked add the chickpeas in a large bowl and crush together with parsley and seasoning. Add flour and form small patties, shallow fry until browned. For the salsa, dice the aubergine in small cubes and sauté until softened. Dice the avocado and tomato also and toss them for a few minutes, season and remove from heat. Open up the bread and Toast lightly, place the lettuce at the bottom, patty, salsa, cheese and cover again. Insert a kebab stick to hold it together and place in hot oven to melt cheese before serving.