Tuna, bean & olive salad - Good Food Middle East

Ingredients

• 120g fine green beans
• 200g can tuna in olive oil
• 1 tbsp extra virgin olive oil
• 1 lemon , zested and juiced
• 1 tbsp red wine vinegar
• 1 tsp Dijon mustard
• 400g can borlotti beans in water, drained
• ½ red onion , sliced
• 1 celery stick , finely sliced on an angle, plus a few leaves
• 50g pitted green nocerella olives
• small bunch of parsley , chopped