Step 1

Cook the pasta in a large saucepan of boiling water, uncovered, until just tender; drain. Rinse under cold water; drain.

Step 2

Meanwhile, boil, steam or microwave beans until just tender and bright green; drain. Rinse under cold water; drain.

Step 3

Drain tuna, reserving the oil from one of the cans of tuna. Place tuna in a large bowl; flake with a fork. Add pasta and beans with herbs, capers and rocket; toss gently to combine.

Step 4

Place remaining ingredients and reserved oil in a screw-top jar; shake well. Drizzle dressing over salad; toss gently to combine.