Pre-heat oven to 350.

Lay out one piece of tin foil (about a foot long) for each diner.  Pour about 1/3 to 1/4 cup of plain couscous onto the tin foil.  Place a portion of mahi-mahi (salmon and trout also work well) on top, and smush couscous around the fish.  Add salt and pepper, about half a lemon per pouch, fresh herbs (oregano or dill work well), and a small amount of vegetable oil (or a pat of butter).  Add sliced zucchini, mushrooms, and any other veggies on hand.  Additions like capers or sundried tomatoes work well too.

Wrap the tin foil, pinching edges for a seal.

Place in oven for 20 minutes, or until fish is done.