Falafel in square flatbread (r’gaif bread) with tahini sauce

Name: Falafel in square flatbread (r’gaif bread) with tahini sauce
Prep time: 1 h
Cook time: 1 h 25 min
Total time: 1 h 25 min
Yield: 4 portions
Ingredients: 2 garlic cloves; 3 stalks fresh flat-leaf parsley; 150 g tahini; 130 g water; 1 tbsp lemon juice; ¾ - 1 tsp salt; ½ - ¾ tsp ground cumin; 180 g water; 20 g fresh yeast; 260 g plain flour; ½ tsp salt; oil; 4 spring onions; 4 garlic cloves; 5 g fresh parsley; 4 stalks fresh mint; ½ fresh red chilli; 1 tsp baking powder; 720 g canned chickpeas; 1 tsp salt; 1 tsp ground cumin; 1 tsp ground coriander; 400 g plain flour; oil