Tuna and white bean salad

1 Cook potatoes in lightly salted water until tender. Drain. Return to pan. Add tomatoes and capers. Shake to coat potatoes evenly.

2 Plunge asparagus in boiling water and cook for 2 minutes. Drain then add to potatoes with tuna, beans and onion.

3 Line a salad bowl with rocket and spinach mix. Add tuna salad ingredients. Mix oil and vinegar together and pour over as a dressing then serve.