Though synonymous with Tunisia, Algeria and other North African nations, harissa’s main ingredient helms from Mexico. After 1492, chile peppers crossed the Atlantic via the Columbian Exchange, trading between the New World and Old World. It was Spain that introduced Tunisia to the spicy capsicum during their 16-century occupation. The Arabic verb harasa means “to crush or press,” and the process of pounding the pepper into a paste with olive oil, garlic and various spices gave birth to harissa. For centuries, the hot chile paste has been used to flavor simmered stews and as a condiment throughout the Maghreb and the Middle East – and, in Marseille, as immigrants have infused the multicultural city with their food traditions.