- Heat the oil in a saucepan and gently cook the onion and carrot for around 5 minutes until soft. Add the soy sauce, peas, lemon zest and juice, chives, couscous and 250ml boiling water.
- Heat gently on a low/medium heat until the couscous has absorbed the water, stirring with a wooden spoon.
- Separate the tuna into flakes and stir into the couscous mixture. Season well and serve hot or cold.