This is a great brunch or substantial lunch dish. A piperade is an egg dish flavoured with ratatouille-style vegetables, a speciality of southern France. In this recipe, I take the dish to Mexico for a spicier variation on the theme with a Cuban mojo salsa. Both the vegetables and the spicy green mojo sauce are all the better made in advance, allowing their flavours to develop. I suggest some country-style bread to serve with the piperades.