Dice onion. Mince garlic, if necessary. Put the oil in a cast-iron frying pan with the onion and garlic. Cook until the onions start to get see-through. Add the pickles and olives. Cook until the onions start to brown. Add seasonings, couscous, & water. Stir well. Cook until couscous has become a solid mass shaped like the pan. Cut into slices and serve.