2 cups (2 oz./60 g) shredded romaine lettuce
1/2 cup (2 1/2 oz./75 g) seeded and finely chopped cucumber
1/2 cup (4 oz./125 g) plain yogurt
4 ciabatta rolls, split
1 tsp. red wine vinegar
4 portobello mushroom caps
Sea salt and freshly ground pepper
1 tsp. hot-pepper sauce
1 1/2 tsp. finely grated lemon zest
2 tsp. fresh lemon juice
3 tsp. finely chopped fresh flat-leaf parsley
1 cup (2 oz./60 g) fresh bread crumbs
1 can (15 oz./425 g) chickpeas, drained and rinsed
1 tsp. ground cumin
4 tsp. finely chopped garlic
1/2 cup (6 oz./185 g) finely chopped red bell pepper
1/2 cup (1/2 oz./75 g) finely chopped yellow onion
3 tsp. extra-virgin olive oil