This is a quick version of the Chtitha Batata, the famous Algerian potato stew with a spicy red sauce. Small potatoes with soft skin are used so no peeling is required. Harissa replaces fresh chilli pepper so there is no need to remove the seeds. All in all, it's a very quick dish to prepare.
If the potatoes are offered as a side dish, the recipe can serve 4 people, but if they are served the traditional way, just with bread, these proportions may satisfy only 2 or 3 people.