Harissa is a dried chili paste from Tunisia made with garlic, spices, and olive oil. It's packed with flavor and delicious as a condiment, marinade, or spread.
In a large bowl, add dried chiles and enough boiling water to cover and submerge (you may need to weigh the chiles down with a plate). Soak for 10 to 15 minutes, until completely softened. Drain well.
Meanwhile, in a small skillet over medium-low heat, add caraway seeds, coriander seeds, and cumin seeds. Toast until fragrant, about 5 minutes. Transfer toasted spices to a small grinder or mortar and pestle and process until finely ground.
To a food processor, add drained chiles, ground spices, garlic, and salt. Process until a thick paste forms, scraping down the sides as necessary. With the motor running, drizzle in olive oil and process until smooth. Add more salt to taste if desired.
Notes
Dried chiles: You'll need 4 ounces of dried chiles, and you can determine how spicy the harissa is based on which ones you choose. Be sure to stem and seed the chiles before soaking.
Mild: Guajillo chiles, Ancho chiles
Medium: Puyo chiles, New Mexico (Hatch) chiles, Pasilla chiles