Fluff cooked couscous and let it cool in a bowl. If it clumps, just fluff again before adding the rest of the ingredients.
Making it ahead? Store the dressing separately and toss before serving— couscous absorbs it fast, so dress right before eating!
Important Note about Salt: Not all salts are made equal and cannot be substituted 1:1. If you are substituting table salt for kosher salt, you will need to cut the amount called for in the recipe by at least half.