Spaghetti Genovese

Directions

1. 1
   Pour a kettle of boiling water into a very large pan until half full.
2. 2
   Return to the boil, then add the potatoes and spaghetti, and a little salt.
3. 3
   Cook for 10 minutes until the potatoes and pasta are almost tender.
4. 4
   Tip in the green beans and cook for 5 minutes more.
5. 5
   Drain well, reserving 4 tbsp of the cooking liquid.
6. 6
   Return the potatoes, pasta and beans to the pan.
7. 7
   stir in the fresh pesto and reserved cooking liquid.
8. 8
   Season to taste.
9. 9
   divide between four serving plates.
10. 10
    Drizzle with a little olive oil.