You've got questions. Big questions. Who am I? What's above the sky? What's nigella, you wonder? Can I eat it? Nigella, aka ketzach, charnushka, kaloji, black cumin, black caraway, onion seed, and many other noms de plume—this is one of the world's most complex spices. Flavor notes that come to mind: sweet, buttery, anise, peppery, floral. But slow your roll. Don't forget this is pistachio halva. Beautiful, glamorous pistachios play no supporting role in this musical; they've got top billing. Fair warning: many people have become enamored with this halva.