Nicoise salad

Step 1
To make the dressing, whisk the oil, vinegar and mustard together. Set aside.

Step 2
Place eggs in a saucepan, just cover with cold water and bring to a simmer. Cook for 6-10 minutes (depending on the size of the eggs).

Step 3
Drain the eggs, make a small crack in the shell to stop cooking and let cool in cold water. This helps make them easier to peel.

Step 4
Meanwhile, cook potatoes in a large saucepan of boiling water for 10 minutes or until just tender. Drain.

Step 5
Put some water and ice cubes in a bowl.

Step 6
Cook beans in a saucepan of boiling water for 2 minutes. Drain and place into the bowl of ice-cold water for a few minutes to cool. Drain again and dry with a tea towel.

Step 7
Place baby cos lettuce leaves, potatoes, beans, tuna, tomatoes and olives on serving plates. Top with eggs cut in quarters. Drizzle with dressing just before serving.