It is an essential ingredient to the cooking of tagines. Try making this Moroccan recipe for Lamb with Preserved Lemons and Olives in a traditional Moroccan tagine.Beef or … Our preserved lemons are a blend of lemons, salt and distilled water aged over six weeks for the perfect texture and flavor. Use them liberally by tossing them in a salad or your favorite Moroccan dish. Preserved lemons, olives, ginger and saffron are a classic Moroccan combination used in many dishes. For the lemons, heat the water until boiling. A tagine is the kitchen toy I never thought I needed until I got one as a wedding present this summer. Ras El Hanout may also be added. Preserved Lemons are added to many dishes as a tangy ingredient or simply as a garnish. Moroccan Tagine Beef Stew with Olives and Preserved Lemons. It’s an earthware pot from North Africa used for slow cooking stews. Add the salt and the pricked lemons and simmer for 15 minutes, then drain and leave to cool before cutting each into quarters and serving with the tagine.