I have only ever eaten couscous as a salad add on. For preparation I add oil, garlic powder, soy sauce, and then cover with boiling water. I then add this to my salad, or fill a bowl with couscous and add diced tomatoes and cucumber.
But I wonder how others eat and prepare their couscous.
I recently had it as a salad, but with Tabouli also, and it was really good. I called it Tabouscous. But usually more as a side dish like rice or pasta.