Fattoush salad recipe

Name: Fattoush salad recipe
Ingredients: 1 medium round pita bread, split into 2 discs, toasted in a hot oven until golden brown and broken into bite-size pieces; 3 tablespoons ground sumac; 80ml extra virgin olive oil; 2 bunches spring onions (about 100g in total), thinly sliced; 6 mini cucumbers (about 300g in total), halved lengthways and cut across into medium-thin half-moons; 300g cherry tomatoes, quartered; 2 Little Gem lettuces (about 400g in total), outer damaged leaves discarded, then cut across into 1cm strips; 1 bunch fresh flat-leaf parsley (about 200g), most of bottom stems discarded, then coarsely chopped; 1/2 bunch fresh mint (about 100g), leaves picked and coarsely chopped; 1/2 bunch fresh purslane (about 100g), leaves only; Sea salt