We had couscous salad last night. This is what I did:
1/4 onion, very finely chopped
1 large tomato, finely diced
1/2 green chilli (seeds removed), finely chopped
juice of a lemon
generous glug of extra virgin olive oil
salt/black pepper
sprinkle of dried oregano
Once the couscous is cooked, and you've added the butter (as per pack instructions), mix in the onion, tomato and chilli.
Add the lemon juice and then enough olive oil to coat the grains. Season to taste.
Leave it to stand for at least 30 minutes, as the flavours develop over time. (If you can make it early and leave it for longer, it will be even better).
I would also add some peas and chopped coriander, but didn't have any to hand yesterday.
And ideally I'd serve with some harissa, but didn't have any of this either!