Salade Niçoise with tuna

Ingredients

• 80 g (2.8 oz) baby potatoes
• 50 g (1.8 oz) green beans, trimmed
• 2 tbsp sherry vinegar
• 3 tbsp Dijon mustard
• 2 tbsp sunflower oil
• 2 heads of romaine lettuce, leaves separated and cleaned
• 10 black olives, halved
• 6 cherry tomatoes, halved
• 0,5 red onion, thinly sliced into rings
• 1 jar Fish Tales white tuna in olive oil (200 g / 7 oz)
• 0,5 can Fish Tales anchovies in olive oil (45 g / 1.6 oz)
• 2 eggs
• extra virgin olive oil
• salt
• pepper