White Pearl Barley Salad with Lemon and Parsley

Ingredients

• 150 gm white pearl barley (see note)
• 10 black manzanilla olives, pitted, crushed
• 1 bunch flat-leaf parsley, coarsely chopped
• 1 spring onion bulb, shaved widthways
• 1 celery heart, shaved widthways
• Preserved lemon dressing
• 1 lemon, juice only
• ½ preserved lemon, rinsed, flesh and pith removed, rind finely chopped
• 1 garlic clove, finely chopped
• 60 ml (¼ cup) olive oil