Step 1

Boil a pan of water. Add the green beans and cook for 2 mins, then add the broccoli and cook for 4 mins more. Drain, run under cold water until cool, then drain well.

Step 2

To make the dressing, combine all the ingredients in a small jam jar with a twist of black pepper, put the lid on and give it a good shake.

Step 3

To serve, mix together the cooked veg with the spinach and mackerel and pack into a lunchbox. Just before eating, pour over the dressing, scatter over the sunflower seeds and add a grind of black pepper and extra dill.