With travel on the back burner indefinitely and my wanderlust still intact, the number of international flavors and recipes coming from my kitchen has soared. If I can’t poke around a souk, bazaar or mercado, at least I can cook as though I’ve been shopping in one. That’s how Potato, Preserved Lemon and Picholine Tagine came to be. Featuring North African ingredients and cooked in a tagine from Essaouira, this dish evokes warm days spent wandering the labyrinthine, cobbled lanes of ancient medinas and dining on aromatic couscous, basteeya and, of course, tagines. How tagines work My favorite and most useful souvenir from Morocco is a terra cotta tagine. An engineering wonder, it consists of two parts: a circular, shallow pan and the large, conical-topped cover that fits inside the base. The cone shape allows condensation to cascade back down to the casserole, creating a rich, reduced sauce. The lid has a small knob on the top, providing cooks with something to grasp when removing the cover to check on the bubbling contents within. How …