There are hot sauces, and then there’s harissa. With roots in Morocco and Tunisia, brick-red harissa is aromatic and complex, with rich layers of flavor from chiles (which can be dried, fresh, or a combination), garlic, olive oil, coriander, cumin, and caraway. You can make harissa at home but prepared versions are available in cans, tubes, and jars in the international aisle of well-stocked markets and in Middle Eastern specialty stores. Brands of store-bought harissa vary in spiciness—start with 1 Tbsp and add more if you want a punchier dressing. Bright lemon and earthy tahini are natural matches for harissa.