Harissa is a very hot chile pepper paste flavored with garlic and spices,
much used in North Africa, especially Tunisia. It is available store-bought, or
you can make your own. Here is the recipe for Harissa.
1 1/2 pounds eggplant, peeled and cubed
5 cloves garlic, peeled
3 large beefsteak tomatoes (about 1 1/2 pounds), peeled and chopped
4 tablespoons argan oil (from Morocco) or hazelnut, sesame, walnut or mild extra-virgin olive oil
2 tablespoons wine vinegar
1/2 teaspoon harissa or a mixture of 1/2 teaspoon paprika and a good pinch of ground chile pepper, to taste
1 teaspoon ground cumin
1/2 cup chopped flat-leaf parsley
Boil eggplant with garlic in plenty of salted water, in a pan covered with a
lid, for about 30 minutes, or until they are very soft.
Drain and chop eggplant and garlic in a colander, then mash with a fork, pressing
all the water out.
Put tomatoes in the emptied pan and cook over low heat for about 20 minutes,
or until reduced to a thick sauce, stirring occasionally. Mix with mashed eggplant
and remaining ingredients, then add salt.